311 lines
14 KiB
JSON
311 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-53622",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-09T20:16:59.646Z",
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"datePublished": "2026-06-23T19:13:28.844Z",
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"dateUpdated": "2026-09-02T12:04:25.840Z"
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},
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"containers": {
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"cna": {
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"title": "Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-288",
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"lang": "en",
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"description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"baseScore": 7.8,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/traefik/traefik/security/advisories/GHSA-9cr8-q42q-g8m7",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/traefik/traefik/security/advisories/GHSA-9cr8-q42q-g8m7"
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},
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{
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"name": "https://github.com/traefik/traefik/pull/13214",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/traefik/traefik/pull/13214"
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},
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{
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"name": "https://access.redhat.com/security/cve/CVE-2026-53622",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://access.redhat.com/security/cve/CVE-2026-53622"
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},
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{
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"name": "https://bugzilla.redhat.com/show_bug.cgi?id=2491924",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491924"
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},
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{
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"name": "https://community.traefik.io/t/new-security-update-for-traefik-2-11-2-11-48-3-6-3-6-19-and-3-7-3-7-3/29917",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://community.traefik.io/t/new-security-update-for-traefik-2-11-2-11-48-3-6-3-6-19-and-3-7-3-7-3/29917"
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},
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{
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"name": "https://github.com/traefik/traefik/compare/v3.6.17...v3.6.18",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/traefik/traefik/compare/v3.6.17...v3.6.18"
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},
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{
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"name": "https://github.com/traefik/traefik/releases/tag/v3.7.3",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/traefik/traefik/releases/tag/v3.7.3"
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},
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{
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"name": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53622.json",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53622.json"
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}
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],
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"affected": [
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{
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"vendor": "traefik",
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"product": "traefik",
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"versions": [
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{
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"version": ">= 3.7.0, < 3.7.3",
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"status": "affected"
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},
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{
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"version": ">= 3.0.0, < 3.6.18",
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"status": "affected"
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},
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{
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"version": "< 2.11.51",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-01T21:10:15.076Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Traefik is an HTTP reverse proxy and load balancer. Versions prior to 3.7.3, 3.6.18, and 2.11.51 have a critical vulnerability in Traefik's HTTP/3 (QUIC) TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcement. When HTTP/3 is enabled on an entrypoint, the TLS handshake selects the applicable TLS configuration through an exact, case-sensitive lookup on the SNI value, which fails to match wildcard host patterns (e.g., *.example.com) or case variants of the configured hostname. Because the handshake falls back to the default TLS configuration — which may not require client certificates — a client can complete the QUIC handshake without presenting a certificate, while the subsequent HTTP routing layer still dispatches the request to a backend protected by a router-specific mTLS policy. The issue affects deployments where HTTP/3 is enabled, a router uses a wildcard Host rule or case-insensitive hostname matching, a router-specific TLSOptions enforces client certificate authentication, and UDP access to the entrypoint is reachable by an attacker. This vulnerability is fixed in versions 3.7.3, 3.6.18, and 2.11.51."
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}
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],
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"source": {
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"advisory": "GHSA-9cr8-q42q-g8m7",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-06-25T12:44:08.806237Z",
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"id": "CVE-2026-53622",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-06-25T12:44:19.114Z"
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}
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},
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{
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"affected": [
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{
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"cpes": [
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"cpe:/a:redhat:openshift_devspaces:3.30::el9"
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],
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"defaultStatus": "affected",
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"packageName": "devspaces/traefik-rhel9",
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"product": "Red Hat OpenShift Dev Spaces 3.30",
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"vendor": "Red Hat",
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"versions": [
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{
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"lessThan": "*",
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"status": "unaffected",
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"version": "1787756799",
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"versionType": "rpm"
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}
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]
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}
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],
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"datePublic": "2026-06-23T19:13:28.844Z",
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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in Traefik, an HTTP reverse proxy and load balancer. This critical vulnerability in Traefik's HTTP/3 (QUIC) TLS configuration selection allows unauthenticated clients to bypass router-specific mutual Transport Layer Security (mTLS) enforcement. When HTTP/3 is enabled and a router uses wildcard host rules or case-insensitive hostname matching with client certificate authentication, an attacker can complete the QUIC handshake without presenting a certificate. This bypass grants unauthorized access to a backend that should be protected by mTLS."
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}
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],
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"metrics": [
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{
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"other": {
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"content": {
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"namespace": "https://access.redhat.com/security/updates/classification/",
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"value": "Important"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 9.1,
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"baseSeverity": "CRITICAL",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-289",
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"description": "Authentication Bypass by Alternate Name",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"references": [
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{
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/security/cve/CVE-2026-53622"
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},
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{
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"name": "RHBZ#2491924",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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],
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491924"
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},
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{
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"tags": [
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"x_sadp-csaf-vex"
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53622.json"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/errata/RHSA-2026:62260"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "RHSA-2026:62260: Red Hat OpenShift Dev Spaces 3.30"
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-06-23T20:01:29.612Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-06-23T19:13:28.844Z",
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"value": "Made public."
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}
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],
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"title": "github.com/traefik/traefik: Traefik: mTLS enforcement bypass due to HTTP/3 TLS configuration flaw",
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"workarounds": [
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{
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"lang": "en",
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"value": "To mitigate this issue, disable HTTP/3 (QUIC) on Traefik entrypoints. This prevents the TLS configuration selection flaw that leads to mTLS bypass. Consult Traefik documentation for specific configuration steps to disable HTTP/3. Restarting the Traefik service will be required for the changes to take effect."
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}
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],
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"x_adpType": "supplier",
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"x_generator": {
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"engine": "sadp-cli 1.0.0"
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"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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"shortName": "redhat-SADP",
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"dateUpdated": "2026-09-02T12:04:25.840Z"
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}
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]
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}
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} |