CVE-2026-125637 A flaw was found in the Konflux UI proxy.
Users able to edit the KonfluxUI custom resource can inject Caddyfile directives to bypass authentication or break the proxy.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-125637?
CVE-2026-125637 is a high-severity code injection vulnerability, published on 11 Nov 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A flaw was found in the Konflux UI proxy. Hostname values defined in the KonfluxUI custom resource are inserted directly into proxy configuration files without adequate validation or sanitization. An authenticated user with permissions to modify the custom resource can inject malicious configuration directives to bypass authentication and authorization controls, potentially exposing internal backend services. In addition, providing malformed input can cause the configuration generator to fail, resulting in a denial of service (DoS) by preventing the proxy from starting.
Weakness: CWE-94
Which versions are affected by CVE-2026-125637?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-125637?
No fix has been published for CVE-2026-125637 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-125637 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-125637 exists.
Sources
Also known as GHSA-8f8v-qvrj-8v89.