{"id":"CVE-2026-59151","aliases":["GHSA-h8m9-jgf8-vwvp","PYSEC-2026-3725"],"url":"https://o3.security/vulnerability/CVE-2026-59151","summary":"Prowler: SAML Domain Claiming Enables Cross-Tenant Account Takeover","details":"Prowler is a cloud security platform. Prior to 5.30.3, Prowler's SAML authentication flow trusted the email domain asserted in a SAMLResponse when deciding which tenant should receive the final token, and the ACS finish logic in api/src/backend/api/v1/views.py recalculated the tenant from user.email instead of binding token issuance to the validated SAML configuration. An authenticated attacker with a controlled SAML IdP could complete a valid SAML flow for an attacker-controlled domain while asserting an email address from another configured domain, causing a SAMLToken and tenant-scoped JWT to be issued for the wrong tenant and enabling cross-tenant account takeover. This issue is fixed in version 5.30.3.","published":"2026-07-10T17:50:07.303Z","modified":"2026-08-28T11:47:31.554891063Z","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"prowler-cloud","fixedVersion":"5.30.3"}],"fix":{"url":"https://github.com/prowler-cloud/prowler/commit/bf3b5c2ba713e533014927141b64948c82c8f32e","label":"prowler-cloud/prowler@bf3b5c2"},"references":[{"type":"WEB","url":"https://github.com/prowler-cloud/prowler/releases/tag/5.30.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59151.json"},{"type":"ADVISORY","url":"https://github.com/prowler-cloud/prowler/security/advisories/GHSA-h8m9-jgf8-vwvp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59151"},{"type":"FIX","url":"https://github.com/prowler-cloud/prowler/commit/bf3b5c2ba713e533014927141b64948c82c8f32e"},{"type":"FIX","url":"https://github.com/prowler-cloud/prowler/commit/f5ff30ad175bd2edf02cd28872653c1cda5867b7"},{"type":"FIX","url":"https://github.com/prowler-cloud/prowler/pull/11650"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-28T11:47:31.554891063Z"}}