Affects widely used Sentry multi-org deployments; critical auth bypass enabling attacker account takeover.
CVE-2026-27197
Critical Sentry SAML SSO auth bypass enables account takeover.
Is CVE-2026-27197 being exploited?
Not confirmed. CVE-2026-27197 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-27197?
CVE-2026-27197 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-27197?
Yes. A fix has been recorded for CVE-2026-27197. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27197 affect?
CVE-2026-27197 affects Sentry self-hosted (v21.12.0–v26.1.0), Sentry multi-organization deployments (cloud/self-hosted). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27197?
Upgrade to 26.2.0+; enforce per-user 2FA.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Account takeover via forged SAML IdP in multi-org Sentry instances; attacker gains victim access.
Patch when possible
- affected>= 21.12.0 and < 26.2.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.