CVE-2026-112267 SGLang through 0.5.22 SSRF via bootstrap_host and bootstrap_port on Decode Worker
Unauthenticated attackers can trigger SSRF and cause denial of service in SGLang's decode worker when prefill/decode disaggregation mode is enabled.
- 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-2026-112267?
CVE-2026-112267 is a medium-severity server-side request forgery 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 in prefill/decode disaggregation mode contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger outbound requests via client-supplied bootstrap_host and bootstrap_port fields. Attackers sending crafted requests to the Decode worker's /generate endpoint can probe internal hosts and ports and block the shared scheduler loop, delaying other inference requests.
Weakness: CWE-918
Which versions are affected by CVE-2026-112267?
How do I fix CVE-2026-112267?
No fix has been published for CVE-2026-112267 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-112267 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112267 exists.
Sources
Also known as GHSA-mg89-3m78-qwqg.