CVE-2026-94570 CVE-2026-94570
An unauthenticated remote attacker can cause a denial of service in SGLang by sending malformed ZeroMQ control messages to the Decode worker.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-94570?
CVE-2026-94570 is a medium-severity denial of service vulnerability in SGLang, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SGLang contains a DoS vulnerability caused by missing input validation for AUX_DATA ZeroMQ control messages in the Decode worker, which enables an unauthenticated remote attacker with network reachability to the Decode control PULL socket to terminate the Decode control thread and cause a denial of service against the target server.
Weakness: CWE-1287
Which versions are affected by CVE-2026-94570?
How do I fix CVE-2026-94570?
No fix published yet.
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-2026-94570 being exploited?
There is no known exploitation of CVE-2026-94570 in the wild and no public exploit code.
Sources
Also known as GHSA-gr7x-rp46-7mvw.