CVE-2026-103041 LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service
Attackers can execute arbitrary code on LightLLM servers by sending malicious serialized objects to an unauthenticated RPyC cache service.
- 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-2026-103041?
CVE-2026-103041 is a critical unsafe deserialization vulnerability in ModelTC LightLLM, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.
Weakness: CWE-502
Which versions are affected by CVE-2026-103041?
How do I fix CVE-2026-103041?
No fix has been published for CVE-2026-103041 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-103041 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-103041 exists.
Sources
Also known as GHSA-3cfg-rxhx-vc58.