{"cve":"CVE-2026-42354","nvd":{"published":"2026-05-08T23:16:38.513","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"Sentry is an error tracking and performance monitoring tool. From version 21.12.0 to before version 26.4.1, a critical vulnerability was discovered in the SAML SSO implementation of Sentry. The vulnerability allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the same Sentry instance. The victim email address must be known in order to exploit this vulnerability. This issue has been patched in version 26.4.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-290"],"references":["https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b","https://github.com/getsentry/sentry/pull/113720","https://github.com/getsentry/sentry/releases/tag/26.4.1","https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7"],"products":["sentry:sentry"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-42354","score":0.00623,"percentile":0.499,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rcmw-7mc7-3rj7","url":"https://osv.dev/vulnerability/GHSA-rcmw-7mc7-3rj7","summary":"Sentry's improper authentication on SAML SSO process allows user identity linking","modified":"2026-06-29T12:26:42.468679036Z","packages":[{"ecosystem":"PyPI","name":"sentry","purl":"pkg:pypi/sentry","ranges":[">=21.12.0 <26.4.1"],"fixed":["26.4.1"]}]},{"id":"PYSEC-2026-534","url":"https://osv.dev/vulnerability/PYSEC-2026-534","summary":"Sentry's improper authentication on SAML SSO process allows user identity linking","modified":"2026-07-13T16:15:34.059184196Z","packages":[{"ecosystem":"PyPI","name":"sentry","purl":"pkg:pypi/sentry","ranges":[">=21.12.0 <26.4.1"],"fixed":["26.4.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}