| Package | Affected versions | Patched versions |
|---|---|---|
| sentry | ≥ 21.12.0, < 26.4.1 | 26.4.1 |
| sentry | ≥ 21.12.0, < 26.4.1 | 26.4.1 |
A critical vulnerability was discovered in the SAML SSO implementation of Sentry. It was reported to us via Sentry's private bug bounty program.
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.
Self-hosted users are only vulnerable if the following conditions are met:
User account-based two-factor authentication prevents an attacker from being able to complete authentication with a victim's user account. Organization administrators cannot do this on a user's behalf, this requires individual users to ensure 2FA has been enabled for their account.
Users can manage their two-factor authentication settings through Account Settings > Security page. For step-by-step details, please see the Sentry helpdesk article.
Please note that this is distinct vulnerability from the similar https://github.com/getsentry/sentry/security/advisories/GHSA-7pq6-v88g-wf3w from 2025.
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