299 lines
12 KiB
JSON
299 lines
12 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-2026-37977",
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"state": "PUBLISHED",
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"assignerShortName": "redhat",
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"dateReserved": "2026-04-06T07:48:39.721Z",
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"datePublished": "2026-04-06T08:38:36.657Z",
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"dateUpdated": "2026-06-26T07:01:32.805Z"
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},
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"containers": {
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"cna": {
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"title": "Keycloak: org.keycloak.protocol.oidc.grants.ciba: keycloak: information disclosure via cors header injection due to unvalidated jwt azp claim",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Low",
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"namespace": "https://access.redhat.com/security/updates/classification/"
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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": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 3.7,
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"baseSeverity": "LOW",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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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:H/PR:N/UI:N/S:U/C:L/I:N/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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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in Keycloak. A remote attacker can exploit a Cross-Origin Resource Sharing (CORS) header injection vulnerability in Keycloak's User-Managed Access (UMA) token endpoint. This flaw occurs because the `azp` claim from a client-supplied JSON Web Token (JWT) is used to set the `Access-Control-Allow-Origin` header before the JWT signature is validated. When a specially crafted JWT with an attacker-controlled `azp` value is processed, this value is reflected as the CORS origin, even if the grant is later rejected. This can lead to the exposure of low-sensitivity information from authorization server error responses, weakening origin isolation, but only when a target client is misconfigured with `webOrigins: [\"*\"]`."
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}
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],
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"affected": [
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-operator-bundle",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4.13-1",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4-19",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9-operator",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4-19",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4.13",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"defaultStatus": "unaffected",
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"packageName": "rhbk/keycloak-rhel9",
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-operator-bundle",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6.3-3",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6-6",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9-operator",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6-6",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6.3",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"defaultStatus": "unaffected",
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"packageName": "rhbk/keycloak-rhel9",
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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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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"url": "https://access.redhat.com/errata/RHSA-2026:25097",
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"name": "RHSA-2026:25097",
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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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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:25098",
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"name": "RHSA-2026:25098",
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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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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:30049",
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"name": "RHSA-2026:30049",
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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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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:30050",
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"name": "RHSA-2026:30050",
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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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},
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-37977",
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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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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455324",
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"name": "RHBZ#2455324",
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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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}
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],
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"datePublic": "2026-04-06T08:34:01.137Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-346",
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"description": "Origin Validation Error",
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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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"x_redhatCweChain": "CWE-346: Origin Validation Error",
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"timeline": [
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{
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"lang": "en",
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"time": "2026-04-06T07:49:33.467Z",
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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": "2026-04-06T08:34:01.137Z",
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"value": "Made public."
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}
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],
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"providerMetadata": {
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"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"shortName": "redhat",
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"dateUpdated": "2026-06-26T07:01:32.805Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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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": "2026-04-06T11:55:21.318112Z",
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"id": "CVE-2026-37977",
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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": "2026-04-06T11:57:17.383Z"
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}
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}
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]
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}
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} |