CVE-2026-88939 knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
Attackers can bypass permission checks to gain write access by repointing the server to another project directory.
- 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-2026-88939?
CVE-2026-88939 is a high-severity authentication bypass vulnerability in knowns-dev knowns, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
knowns through 0.33.0 exempts the project.set action from permission guard checks unconditionally, allowing read-only agent sessions to bypass restrictions. Attackers can invoke project.set to repoint the server at another project directory and obtain write access capabilities.
Weakness: CWE-863
Which versions are affected by CVE-2026-88939?
How do I fix CVE-2026-88939?
No fix has been published for CVE-2026-88939 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-88939 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88939 exists.
Sources
Also known as GHSA-qwj4-f78f-jj3j.