CVE-2026-59151
Prowler: SAML Domain Claiming Enables Cross-Tenant Account Takeover
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.
- Affected
- prowler-cloud · prowler
- CVSS v3.1 GITHUB
- 9.6 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - EPSS
- 0.53% chance of exploitation in the next 30 days, 44th percentile
- Published
- 2026-07-10
- Updated
- 2026-07-13