# 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.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 11 Aug 2026
- **Updated:** 26 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-19550, GHSA-6xg7-8fr6-8p33, UBUNTU-CVE-2026-19550

## 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 (Incorrect Authorization)

## Which versions are affected by CVE-2026-19550?

It affects 2 products.


Products: Freeipa Freeipa, Redhat Enterprise Linux.

## How do I fix CVE-2026-19550?

Apply the vendor's patch.

## 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](https://insights.sbomify.com/CVE-2015-5284/): Information disclosure in n/a (critical 9.8)
- [CVE-2026-11861](https://insights.sbomify.com/CVE-2026-11861/): Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships (critical 9.6)
- [CVE-2024-2698](https://insights.sbomify.com/CVE-2024-2698/): Freeipa: delegation rules allow a proxy service to impersonate any user to access another target service (high 8.8)
- [CVE-2012-5631](https://insights.sbomify.com/CVE-2012-5631/): Information disclosure in ipa (high 8.8)
- [CVE-2017-11191](https://insights.sbomify.com/CVE-2017-11191/): Security feature bypass in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19550 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-19550 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19550/ (Markdown: https://insights.sbomify.com/CVE-2026-19550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19550
- OSV: https://osv.dev/vulnerability/CVE-2026-19550

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19550/
Summaries are generated and may contain mistakes; the official description above is the record.