CVE-2026-90446 Server-Side Request Forgery in Malcolm
An authenticated attacker can exploit an API endpoint to perform Server-Side Request Forgery, accessing restricted internal configuration and administrative data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90446?
CVE-2026-90446 is a medium-severity server-side request forgery vulnerability in CISA Malcolm, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An application programming interface endpoint accepts a user-supplied value and interpolates it directly into the path of a backend request to the underlying search and analytics data store, without restricting its contents. This allows an authenticated attacker to substitute an arbitrary backend path, causing the application's own elevated service credentials to be used against unintended internal endpoints. This could allow an attacker to enumerate or read internal configuration and administrative data from the backend data store that would otherwise be restricted.
Weakness: CWE-918
Which versions are affected by CVE-2026-90446?
How do I fix CVE-2026-90446?
No fix has been published for CVE-2026-90446 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-90446 being exploited?
There is no known exploitation of CVE-2026-90446 in the wild and no public exploit code.
Sources
Also known as GHSA-q9h9-qwh3-9392.