CVE-2026-59151Public exploitNetwork attack vector

Cross-tenant account takeover via SAML tenant rebinding

Published Jul 10, 2026 · Updated Jul 10, 2026

Improper authentication in Prowler before 5.30.3 allows remote authenticated users to take over another tenant through a crafted SAML assertion. The ACS finish logic in api/src/backend/api/v1/views.py derives the token tenant from the assertion-controlled user.email domain instead of the SAML configuration selected and validated for the ACS route. Exploitation requires an authenticated tenant user, a controlled SAML IdP, and SAML enabled for the target domain; it yields tenant-scoped JWT access without victim interaction.

CVSS severity9.6
Critical
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Prowler before 5.30.3 allows remote authenticated users to take over another tenant through a crafted SAML assertion. The ACS finish logic in api/src/backend/api/v1/views.py derives the token tenant from the assertion-controlled user.email domain instead of the SAML configuration selected and validated for the ACS route. Exploitation requires an authenticated tenant user, a controlled SAML IdP, and SAML enabled for the target domain; it yields tenant-scoped JWT access without victim interaction.

The record

CVE
CVE-2026-59151
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Prowler
Product
Prowler
Classifications
CWE-287, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.30.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Prowler · Prowlerversion=< 5.30.3

Published CVSS scores

9.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1078Valid Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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