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Vulnerability record · CVE-2026-59151 · published 10 July 2026

CVE-2026-59151: Prowler improper authentication vulnerability

Prowler · Prowler

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.

9.6 CVSS 3.1 Critical EPSS 0.53% · top 57.2% CWE-287 · Improper authentication
9.6CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
26 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/prowler-cloud/prowler/commit/bf3b5c2ba713e533014927141b64948c82c8f32e Patch
https://github.com/prowler-cloud/prowler/commit/f5ff30ad175bd2edf02cd28872653c1cda5867b7 Patch
https://github.com/prowler-cloud/prowler/pull/11650 Issue Tracking
https://github.com/prowler-cloud/prowler/releases/tag/5.30.3 Release Notes
https://github.com/prowler-cloud/prowler/security/advisories/GHSA-h8m9-jgf8-vwvp ExploitVendor Advisory
https://github.com/prowler-cloud/prowler/security/advisories/GHSA-h8m9-jgf8-vwvp ExploitVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-59151), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.