Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sentry | Sentry | >= 21.12.0, < 26.4.1 |
Related Weaknesses (CWE)
References
- https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048dPatch
- https://github.com/getsentry/sentry/pull/113720Issue TrackingPatch
- https://github.com/getsentry/sentry/releases/tag/26.4.1ProductRelease Notes
- https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7MitigationVendor Advisory
FAQ
What is CVE-2026-42354?
CVE-2026-42354 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 vulner...
How severe is CVE-2026-42354?
CVE-2026-42354 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-42354?
Check the references section above for vendor advisories and patch information. Affected products include: Sentry Sentry.