CVE-2026-42354

CRITICAL EPSS 45.4%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
45.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-290

Affected Products 1

VendorProductVersionRange
sentrysentry*≥21.12.0  –  <26.4.1

References 4

  • github.com https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b
    Patch
  • github.com https://github.com/getsentry/sentry/pull/113720
    Issue TrackingPatch
  • github.com https://github.com/getsentry/sentry/releases/tag/26.4.1
    ProductRelease Notes
  • github.com https://github.com/getsentry/sentry/security/advisories/GHSA-rcmw-7mc7-3rj7
    MitigationVendor Advisory

Remediation

  • github.com https://github.com/getsentry/sentry/commit/0c67558ae7fe08738912d4c5233b53ead048da3b
    Patch
  • github.com https://github.com/getsentry/sentry/pull/113720
    Issue TrackingPatch