{"cve":"CVE-2026-27197","nvd":{"published":"2026-02-21T05:17:29.510","modified":"2026-06-17T10:26:49.987","status":"Analyzed","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-287"],"references":["https://github.com/getsentry/sentry/security/advisories/GHSA-ggmg-cqg6-j45g"],"products":["sentry:sentry"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-27197","score":0.00494,"percentile":0.42444,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-ggmg-cqg6-j45g","url":"https://osv.dev/vulnerability/GHSA-ggmg-cqg6-j45g","summary":"Sentry: Improper authentication on SAML SSO process allows user identity linking","modified":"2026-06-29T12:26:11.157086111Z","packages":[{"ecosystem":"PyPI","name":"sentry","purl":"pkg:pypi/sentry","ranges":[">=21.12.0"],"fixed":[]}]},{"id":"PYSEC-2026-533","url":"https://osv.dev/vulnerability/PYSEC-2026-533","summary":"Sentry: Improper authentication on SAML SSO process allows user identity linking","modified":"2026-09-10T11:15:09.023971436Z","packages":[{"ecosystem":"PyPI","name":"sentry","purl":"pkg:pypi/sentry","ranges":[">=21.12.0 <26.2.0"],"fixed":["26.2.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}