CVE-2026-27197: critical vulnerability in getsentry sentry
Sentry: Improper Authentication on SAML SSO process allows user identity linking
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.5%
Sentry is a developer-first error tracking and performance monitoring tool. Versions 21.12.0 through 26.1.0 have a critical vulnerability in its SAML SSO implementation which allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the same Sentry instance. Self-hosted users are only at risk if the following criteria is met: ore than one organizations are configured (SENTRY_SINGLE_ORGANIZATION = True), or malicious user has existing access and permissions to modify SSO settings for another organization in a multo-organization instance. This issue has been fixed in version 26.2.0. To workaround this issue, implement user account-based two-factor authentication to prevent 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
getsentry · sentryRelated CVEs — getsentry sentry
In the same product, most dangerous first.
CVE-2023-39349HIGHSentry vulnerable to privilege escalation via ApiTokensEndpointEPSS 1.1%CVE-2025-53099MEDIUMSentry Missing Invalidation of Authorization Codes During OAuth Exchange and RevocationEPSS 0.8%CVE-2023-36829MEDIUMSentry CORS misconfiguration vulnerabilityEPSS 0.7%CVE-2024-53253MEDIUMSentry's improper error handling leaks Application Integration Client SecretEPSS 0.6%CVE-2023-36826HIGHSentry vulnerable to improper authorization on debug and artifact file downloadsEPSS 0.6%CVE-2026-42354CRITICALSentry: Improper authentication on SAML SSO process allows user identity linkingEPSS 0.6%