CVE-2026-79919 Security feature bypass in MaxKB
Authenticated users can bypass the sandbox to execute code, read/write files, and access networks by exploiting importlib callbacks and dlsym hooks.
- 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-2026-79919?
CVE-2026-79919 is a medium-severity vulnerability in 1Panel-dev MaxKB, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.6-lts, function-library code running under the LD_PRELOAD sandbox can invoke ctypes.CDLL from an importlib.abc.MetaPathFinder callback so the dlopen call-stack heuristic sees a Python import frame, then use unhooked dlsym with RTLD_NEXT to resolve glibc's real syscall and bypass the sandbox syscall blacklist. An authenticated workspace member can consequently read or write files, execute processes, or access networks as the sandbox user. This issue is fixed in version 2.10.6-lts.
Weakness: CWE-693
Which versions are affected by CVE-2026-79919?
How do I fix CVE-2026-79919?
No fix has been published for CVE-2026-79919 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-79919 being exploited?
There is no known exploitation of CVE-2026-79919 in the wild and no public exploit code.
Sources
Also known as GHSA-6h35-c779-4v37.