{"id":"CVE-2026-54714","state":"PUBLISHED","title":"Logto: XSS via unescaped RelayState in SAML auto-submit form","description":"Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, @logto/core reflected the SAML RelayState, SAMLResponse, and actionUrl into a Logto-origin auto-submit HTML form in packages/core/src/saml-application/SamlApplication/utils.ts without HTML-attribute escaping. A SAML application flow with a crafted RelayState from GET or POST /api/saml/:id/authn could inject script that runs on the Logto tenant origin after the user completes login. This issue is fixed in version 1.41.0.","publishedAt":"2026-07-10T19:54:28.526Z","updatedAt":"2026-07-13T18:18:36.103Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["logto-io logto"],"affected":[{"vendor":"logto-io","product":"logto","versions":[{"version":"< 1.41.0","status":"affected"}]}],"references":["https://github.com/logto-io/logto/security/advisories/GHSA-cpm5-w86q-w85f","https://github.com/logto-io/logto/pull/9008","https://github.com/logto-io/logto/commit/209fa0a5cbe8522f9cf31873239dc6424099bb5e","https://github.com/logto-io/logto/releases/tag/v1.41.0"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54714.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54714","state":"PUBLISHED","datePublished":"2026-07-10T19:54:28.526Z","dateUpdated":"2026-07-13T18:18:36.103Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T22:58:06.564Z"},"containers":{"cna":{"title":"Logto: XSS via unescaped RelayState in SAML auto-submit form","descriptions":[{"lang":"en","value":"Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, @logto/core reflected the SAML RelayState, SAMLResponse, and actionUrl into a Logto-origin auto-submit HTML form in packages/core/src/saml-application/SamlApplication/utils.ts without HTML-attribute escaping. A SAML application flow with a crafted RelayState from GET or POST /api/saml/:id/authn could inject script that runs on the Logto tenant origin after the user completes login. This issue is fixed in version 1.41.0."}],"affected":[{"vendor":"logto-io","product":"logto","versions":[{"version":"< 1.41.0","status":"affected"}]}],"references":[{"url":"https://github.com/logto-io/logto/security/advisories/GHSA-cpm5-w86q-w85f","name":"https://github.com/logto-io/logto/security/advisories/GHSA-cpm5-w86q-w85f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/logto-io/logto/pull/9008","name":"https://github.com/logto-io/logto/pull/9008","tags":["x_refsource_MISC"]},{"url":"https://github.com/logto-io/logto/commit/209fa0a5cbe8522f9cf31873239dc6424099bb5e","name":"https://github.com/logto-io/logto/commit/209fa0a5cbe8522f9cf31873239dc6424099bb5e","tags":["x_refsource_MISC"]},{"url":"https://github.com/logto-io/logto/releases/tag/v1.41.0","name":"https://github.com/logto-io/logto/releases/tag/v1.41.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-10T19:54:28.526Z"},"source":{"advisory":"GHSA-cpm5-w86q-w85f","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-13T18:18:29.074854Z","id":"CVE-2026-54714","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-13T18:18:36.103Z"}}]}}}