CRITICAL SeverityCVSS 3.19.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVE-2026-42354

Last updated May 08, 2026 · Published May 08, 2026

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.

Affected products

1 listed

getsentry:sentry

Mappings

CWE

CWE-290

CAPEC

None listed.

Research

AuthenticationA threat-focused guide to authentication, covering attack paths, design pitfalls, and concrete defenses from…

Guides

Training

Authentication PatternsOAuth 2.1, passkeys, WebAuthn, and JWTs - modern identity for modern apps.

CVE-2026-42354

Description

Affected products

Mappings

Related