150 lines
6.4 KiB
JSON
150 lines
6.4 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-2026-41263",
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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": "2026-04-18T14:01:46.801Z",
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"datePublished": "2026-04-30T20:39:49.658Z",
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"dateUpdated": "2026-05-01T14:22:40.566Z"
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},
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"containers": {
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"cna": {
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"title": "Traefik: BasicAuth middleware: timing side-channel vulnerability",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-208",
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"lang": "en",
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"description": "CWE-208: Observable Timing Discrepancy",
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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": "HIGH",
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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": "LOW",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 6.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/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-6x2q-h3cr-8j2h",
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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-6x2q-h3cr-8j2h"
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},
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{
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"name": "https://github.com/traefik/traefik/releases/tag/v2.11.43",
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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/v2.11.43"
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},
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{
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"name": "https://github.com/traefik/traefik/releases/tag/v3.6.14",
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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/v3.6.14"
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},
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{
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"name": "https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2",
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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/v3.7.0-rc.2"
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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": "< 2.11.43",
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"status": "affected"
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},
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{
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"version": ">= 3.0.0-beta1, < 3.6.14",
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"status": "affected"
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},
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{
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"version": ">= 3.7.0-ea.1, < 3.7.0-rc.2",
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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": "2026-04-30T20:39:49.658Z"
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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. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a timing side-channel vulnerability in Traefik's BasicAuth middleware that allows an attacker to enumerate valid usernames through response-time differences. The variable intended to hold a constant-time fallback secret always resolves to an empty string, causing the constant-time comparison to short-circuit in microseconds rather than performing a full bcrypt evaluation. This restores the original timing oracle and makes it possible to distinguish existing users from non-existing ones by measuring authentication response times. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2."
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}
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],
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"source": {
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"advisory": "GHSA-6x2q-h3cr-8j2h",
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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": "2026-05-01T14:22:30.689474Z",
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"id": "CVE-2026-41263",
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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": "no"
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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": "2026-05-01T14:22:40.566Z"
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}
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}
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]
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}
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} |