CVE-2026-59151

Description

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.

References

• https://github.com/prowler-cloud/prowler/commit/bf3b5c2ba713e533014927141b64948c82c8f32e
• https://github.com/prowler-cloud/prowler/commit/f5ff30ad175bd2edf02cd28872653c1cda5867b7
• https://github.com/prowler-cloud/prowler/pull/11650
• https://github.com/prowler-cloud/prowler/releases/tag/5.30.3
• https://github.com/prowler-cloud/prowler/security/advisories/GHSA-h8m9-jgf8-vwvp