Improper Authentication in sentry - #VU139937
Published: July 28, 2026
Vulnerability identifier: #VU139937
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Sentry
Affected software:
sentry
sentry
Detailed vulnerability description
The vulnerability allows a remote attacker to take control of any authenticated Sentry user account.
The vulnerability exists due to improper authentication in the SAML SSO process when handling a SAML login flow with an attacker-controlled identity provider and a malicious URL. A remote attacker can trick a user into clicking a crafted link to take control of any authenticated Sentry user account.
This issue affects users accessing the application with browsers that honor SameSite=None cookies, including Firefox, and Chromium-based browsers with third-party cookies enabled.
Remediation
Install security update from vendor's website.