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

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 90:4.13.4-1.el9_8 < *unaffected

Weaknesses

  • CWE-863: Incorrect Authorization

Workarounds

This issue is fixed upstream. Administrators should apply this fix once available for their platform. Until then, the previously suggested compensating control (restricting "System: Read Trust Information" so it is not granted to all authenticated users) remains a valid interim workaround, with the same caveat that doing so may affect SSSD subdomain support, which relies on that permission's default breadth.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References