CVE-2026-19550 Missing authorization in Red Hat Enterprise Linux 10
Authenticated users can modify trusted-domain data by exploiting incorrect permission checks on the trust-fetch-domains command.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-19550?
CVE-2026-19550 is a high-severity missing authorization vulnerability in Redhat Enterprise Linux, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-19550?
It affects 2 products.
Products include Freeipa Freeipa, Redhat Enterprise Linux.
How do I fix CVE-2026-19550?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-19550 being exploited?
There is no known exploitation of CVE-2026-19550 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2015-5284 Information disclosure in n/a
- CVE-2026-11861 Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships
- CVE-2024-2698 Freeipa: delegation rules allow a proxy service to impersonate any user to access another target service
- CVE-2012-5631 Information disclosure in ipa
- CVE-2017-11191 Security feature bypass in n/a
Sources
Also known as DEBIAN-CVE-2026-19550, GHSA-6xg7-8fr6-8p33, UBUNTU-CVE-2026-19550.