Critical 9.1Published May 8, 2026

CVE-2026-42354Sentry: Improper authentication on SAML SSO process allows user identity linking

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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Every CVE for getsentry sentry

Exploited in the last 30 days

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: 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-290
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

getsentry sentry getsentry:sentry (from the name)	from 21.12.0, < 26.4.1	CNA record
sentry sentry sentry:sentry	from 21.12.0 before 26.4.1	NVD

References

References

https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/getsentry/sentry/pull/113720	x-refsource-misc, issue-tracking, patch
https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b	x-refsource-misc, patch
https://github.com/getsentry/sentry/releases/tag/26.4.1	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.