CVE DATABASE / CVE-2026-42354
CVE-2026-42354
CVSS 9.1 · CRITICAL
Summary
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 3.1 breakdown
| Base score | 9.1 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | NONE |
Weakness type (CWE)
Affected products
Sentry sentry
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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
Data: NIST NVD. NVD last modified 2026-05-18. Always verify against the vendor advisory before acting.