CVE-2026-42354

critical · 9.1

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.

9.1

CVSS

0.6%

EPSS (exploit prob.)

48th

EPSS percentile

2026-05-08

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-290

Affected products

Vendor	Product	Affected versions
sentry	sentry	>= 21.12.0, < 26.4.1

Check a specific version with /api/v1/cve/match.

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-42354