CVE-2026-112266 SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
Attackers can cause denial of service by aborting other users' generation requests via prefix matching in SGLang.
- 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-2026-112266?
CVE-2026-112266 is a high-severity denial of service vulnerability in sgl-project sglang, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SGLang through 0.5.22 contains a denial of service vulnerability that allows API clients to abort other users' in-flight generation requests by supplying a short client-controlled rid. Attackers can submit streaming /generate requests with single hex character rids and disconnect, triggering prefix-matching abort logic that terminates all other clients' requests.
Weakness: CWE-187
Which versions are affected by CVE-2026-112266?
How do I fix CVE-2026-112266?
No fix has been published for CVE-2026-112266 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-2026-112266 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112266 exists.
Sources
Also known as GHSA-8v54-r9x8-p94v.