CVE-2026-19550

Summary

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.

Affected Software

Weaknesses

• CWE-863: Incorrect Authorization

Workarounds

Administrators of IdM/FreeIPA servers with an Active Directory trust configured can reduce exposure by restricting the default "System: Read Trust Information" permission so it is no longer granted to all authenticated users. This is a suggested compensating control, and should be tested before applying in production, since "System: Read Trust Information" may be relied on by other legitimate read-only lookups (e.g. SSSD subdomain support, per the permission's own code comment).

References

• https://access.redhat.com/security/cve/CVE-2026-19550
• https://bugzilla.redhat.com/show_bug.cgi?id=2514019

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