CVE-2026-19550

Analyzed Analyzed - Analysis Complete

Privileged Trust Refresh in FreeIPA

Publication date: 2026-08-11

Last updated on: 2026-08-25

Assigner: redhat-SADP

Description

A flaw was found in FreeIPA. The trust-fetch-domains command is gated by a read-only permission on the trust object rather than a trust-administration permission, allowing an authenticated, non-privileged IPA user to trigger a privileged Active Directory trust refresh using an attacker-supplied server and credentials, resulting in unauthorized, attacker-controlled modification of trusted-domain and ID-range identity data in the IPA LDAP directory.

CVSS Scores

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Meta Information

Published

2026-08-11

Last Modified

2026-08-25

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-19550

Affected Vendors & Products

Vendor	Product	Version / Range
redhat	enterprise_linux	7.0
redhat	enterprise_linux	8.0
redhat	enterprise_linux	9.0
redhat	enterprise_linux	10.0
freeipa	freeipa	to 4.13.3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability in FreeIPA allows an authenticated but non-privileged user to trigger a privileged Active Directory trust refresh. The user can supply attacker-controlled server and credentials, leading to unauthorized changes in trusted-domain and ID-range identity data stored in the IPA LDAP directory.

Detection Guidance

This vulnerability can be detected by reviewing IPA trust configurations and checking for unauthorized trust refresh operations. Look for unexpected modifications to trusted-domain or ID-range identity data in the IPA LDAP directory. Review logs for the trust-fetch-domains command usage by non-privileged users.

Impact Analysis

An attacker could manipulate identity data in the IPA LDAP directory, potentially causing disruptions in authentication, authorization, or data integrity within the FreeIPA environment. This may lead to unauthorized access or data exposure if exploited.

Compliance Impact

This vulnerability could compromise data integrity and access controls, which are critical for compliance with GDPR and HIPAA. Unauthorized modifications to identity data may result in violations of confidentiality, integrity, and availability requirements.

Mitigation Strategies

Update FreeIPA to the latest patched version to ensure the trust-fetch-domains command is properly gated by trust-administration permissions. Review and restrict permissions for non-privileged IPA users to prevent unauthorized trust refresh operations.

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