CVE-2026-59151

Critical

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.

SeverityCritical
CVSS9.6
Exploit probability—
ProductProwler
PublishedJul 10, 2026
First seenJul 10, 2026

How to fix

Update
  • prowler prowler5.30.3 or later

Affected products

ProductAffected versionsFixed in
prowler prowlerv < 5.30.35.30.3

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