CVE-2026-102899CWE-287

CVE-2026-102899

published October 14, 2026

CVSS
7.6
EPSS
0%
Percentile
29.0
In the wild
Unconfirmed
What it is

Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2.

The record
Technical detail
CVSS
7.6 · NONE
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00364 · 29.0th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-10-14T23:17Z
References (7)
https://github.com/getsentry/self-hosted/releases/tag/26.7.2 · [email protected]https://github.com/getsentry/sentry/commit/9c982d4bcb81c93e2db552084bcbb45cdd34bdd3 · [email protected]https://github.com/getsentry/sentry/commit/ec963de4ec8c7f340f286c6f613e55458a9e5ddf · [email protected]https://github.com/getsentry/sentry/pull/120467 · [email protected]https://github.com/getsentry/sentry/pull/120702 · [email protected]https://github.com/getsentry/sentry/releases/tag/26.7.2 · [email protected]https://github.com/getsentry/sentry/security/advisories/GHSA-w699-8wff-fqxw · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 18:57Z
    Sentry: Improper authentication on SAML SSO process allows user identity linking
    cvelistv5
  • 14 OCT 18:57Z
    Sentry: Improper authentication on SAML SSO process allows user identity linking
    cvelistv5