CVE-2026-111869 makeplane API Endpoint reliance on untrusted inputs in a security decision
Attackers can bypass security controls by manipulating the X-Forwarded-For header in the Plane API, potentially circumventing access restrictions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111869?
CVE-2026-111869 is a medium-severity vulnerability in makeplane plane, published on 18 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in makeplane plane up to 1.4.2. Impacted is an unknown function of the component API Endpoint. Such manipulation of the argument X-Forwarded-For leads to reliance on untrusted inputs in a security decision. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-111869?
How do I fix CVE-2026-111869?
No fix has been published for CVE-2026-111869 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111869 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111869 exists.
Sources
Also known as GHSA-frrj-xjh4-92p7.