CVE-2026-59151
Prowler: SAML Domain Claiming Enables Cross-Tenant Account Takeover
- State
- Published
- Severity
- 9.6 Critical
- Published
- Jul 10, 2026
- Updated
- Jul 13, 2026
- Reserved
- Jul 2, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.6 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
prowlerprowler-cloud |
|
References
- https://github.com/prowler-cloud/prowler/security/advisories/GHSA-h8m9-jgf8-vwvp
- https://github.com/prowler-cloud/prowler/pull/11650
- https://github.com/prowler-cloud/prowler/commit/bf3b5c2ba713e533014927141b64948c82c8f32e
- https://github.com/prowler-cloud/prowler/commit/f5ff30ad175bd2edf02cd28872653c1cda5867b7
- https://github.com/prowler-cloud/prowler/releases/tag/5.30.3
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