{"id":"CVE-2026-102899","state":"PUBLISHED","title":"Sentry: Improper authentication on SAML SSO process allows user identity linking","description":"Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2.","publishedAt":"2026-10-14T18:57:50.768Z","updatedAt":"2026-10-15T14:23:19.741Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["getsentry sentry"],"affected":[{"vendor":"getsentry","product":"sentry","versions":[{"version":">= 26.5.0, < 26.7.2","status":"affected"}]}],"references":["https://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxw","https://github.com/getsentry/sentry/pull/120467","https://github.com/getsentry/sentry/pull/120702","https://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3","https://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddf","https://github.com/getsentry/self-hosted/releases/tag/26.7.2","https://github.com/getsentry/sentry/releases/tag/26.7.2"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102899.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102899","state":"PUBLISHED","datePublished":"2026-10-14T18:57:50.768Z","dateUpdated":"2026-10-15T14:23:19.741Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-29T17:34:42.743Z"},"containers":{"cna":{"title":"Sentry: Improper authentication on SAML SSO process allows user identity linking","descriptions":[{"lang":"en","value":"Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2."}],"affected":[{"vendor":"getsentry","product":"sentry","versions":[{"version":">= 26.5.0, < 26.7.2","status":"affected"}]}],"references":[{"url":"https://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxw","name":"https://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/getsentry/sentry/pull/120467","name":"https://github.com/getsentry/sentry/pull/120467","tags":["x_refsource_MISC"]},{"url":"https://github.com/getsentry/sentry/pull/120702","name":"https://github.com/getsentry/sentry/pull/120702","tags":["x_refsource_MISC"]},{"url":"https://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3","name":"https://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3","tags":["x_refsource_MISC"]},{"url":"https://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddf","name":"https://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddf","tags":["x_refsource_MISC"]},{"url":"https://github.com/getsentry/self-hosted/releases/tag/26.7.2","name":"https://github.com/getsentry/self-hosted/releases/tag/26.7.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/getsentry/sentry/releases/tag/26.7.2","name":"https://github.com/getsentry/sentry/releases/tag/26.7.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-14T18:57:50.768Z"},"source":{"advisory":"GHSA-w699-8wff-fqxw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T14:22:26.114527Z","id":"CVE-2026-102899","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T14:23:19.741Z"}}]}}}