{"id":"CVE-2026-123798","published":"2026-11-09T19:16:46.280","lastModified":"2026-11-09T19:16:46.280","description":"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.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-287","CWE-347"],"vendors":[],"products":[],"references":[{"url":"https://github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.3.7","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.4.7","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.0.10","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj","tags":[]}],"exploitRefs":[{"url":"https://github.com/supertokens/supertokens-core/commit/8d06b0cfb5409c5bf505051ddfcb94d66367caae","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/commit/9cba541ae2ed87b878d11b257bc9b8b78341f50a","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/commit/d0773f2a6497411aeda5d4f03d3d135a2a3ae79c","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.3.7","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v11.4.7","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/releases/tag/v12.0.10","tags":[]},{"url":"https://github.com/supertokens/supertokens-core/security/advisories/GHSA-gvx2-mwmj-wwvj","tags":[]}],"hasPoc":true,"ai":null}