CVE-2026-123798

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-123798", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-06T15:27:56.225Z", "datePublished": "2026-11-09T18:04:20.419Z", "dateUpdated": "2026-11-09T18:04:20.419Z"}, "containers": {"cna": {"title": "SuperTokens Core: SAML XML Signature Wrapping authentication bypass \u2014 any IdP user can authenticate as any other user", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-347", "lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj"}, {"name": "https://github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae"}, {"name": "https://github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a"}, {"name": "https://github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c"}, {"name": "https://github.com/supertokens/supertokens-core/releases/tag/v11.3.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.3.7"}, {"name": "https://github.com/supertokens/supertokens-core/releases/tag/v11.4.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.4.7"}, {"name": "https://github.com/supertokens/supertokens-core/releases/tag/v12.0.10", "tags": ["x_refsource_MISC"], "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.0.10"}], "affected": [{"vendor": "supertokens", "product": "supertokens-core", "versions": [{"version": ">= 12.0.6, < 12.0.10", "status": "affected"}, {"version": ">= 11.4.0, < 11.4.7", "status": "affected"}, {"version": ">= 11.3.0, < 11.3.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-09T18:04:20.419Z"}, "descriptions": [{"lang": "en", "value": "SuperTokens Core is an open source authentication server. From 11.3.0 until 11.3.7, 11.4.7, and 12.0.10, SAML.verifySamlResponseSignature calls OpenSAML SignatureValidator.validate without first applying SAMLSignatureProfileValidator. The Core can therefore accept a cryptographically valid signature that references a different XML element from the Response or Assertion whose NameID and attributes are used for authentication. An ordinary user of the configured identity provider can move a genuinely signed element elsewhere in the document while supplying an attacker-authored identity-bearing element, causing XML Signature Wrapping authentication as another IdP user. Both response-level and assertion-level signing paths are affected, and SP-initiated login remains reachable without enabling allowIDPInitiatedLogin. This issue is fixed in versions 11.3.7, 11.4.7, and 12.0.10."}], "source": {"advisory": "GHSA-gvx2-mwmj-wwvj", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "supertokens-core", "vendor": "supertokens", "versions": [{"status": "affected", "version": ">= 12.0.6, < 12.0.10"}, {"status": "affected", "version": ">= 11.4.0, < 11.4.7"}, {"status": "affected", "version": ">= 11.3.0, < 11.3.7"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "SuperTokens Core is an open source authentication server. From 11.3.0 until 11.3.7, 11.4.7, and 12.0.10, SAML.verifySamlResponseSignature calls OpenSAML SignatureValidator.validate without first applying SAMLSignatureProfileValidator. The Core can therefore accept a cryptographically valid signature that references a different XML element from the Response or Assertion whose NameID and attributes are used for authentication. An ordinary user of the configured identity provider can move a genuinely signed element elsewhere in the document while supplying an attacker-authored identity-bearing element, causing XML Signature Wrapping authentication as another IdP user. Both response-level and assertion-level signing paths are affected, and SP-initiated login remains reachable without enabling allowIDPInitiatedLogin. This issue is fixed in versions 11.3.7, 11.4.7, and 12.0.10."}], "id": "CVE-2026-123798", "lastModified": "2026-11-12T22:18:51.470", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-09T19:16:46.280", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.3.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.4.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.0.10"}, {"source": "security-advisories@github.com", "url": "https://github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[12.0.6,12.0.10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.4.0,11.4.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.3.0,11.3.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "supertokens-core", "source": "cna", "vendor": "supertokens"}, "product": "supertokens", "vendor": "supertokens"}], "created": "2026-11-09T19:30:15.903047+00:00", "updated": "2026-11-11T16:00:03.839973+00:00", "vendors": ["supertokens", "supertokens$PRODUCT$supertokens"]}