CVE-2026-86317 ggml-org llama.cpp RPC Server ggml-rpc.cpp deserialize_tensor assertion
Remote attackers can crash the llama.cpp RPC server by sending manipulated tensor data, causing a denial of 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-2026-86317?
CVE-2026-86317 is a medium-severity denial of service vulnerability in ggml-org llama.cpp, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in ggml-org llama.cpp up to 0.4.0. This impacts the function rpc_server::deserialize_tensor of the file ggml/src/ggml-rpc/ggml-rpc.cpp of the component RPC Server. Performing a manipulation of the argument ne results in reachable assertion. The attack is possible to be carried out remotely. The reported GitHub issue was closed automatically due to inactivity.
Weakness: CWE-617
Which versions are affected by CVE-2026-86317?
How do I fix CVE-2026-86317?
No fix has been published for CVE-2026-86317 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-86317 being exploited?
There is no known exploitation of CVE-2026-86317 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-86317, GHSA-c676-w283-jfxr, UBUNTU-CVE-2026-86317.