CVE-2026-84857 sigoden aichat API Endpoint serve.rs memory allocation
Remote attackers can cause denial of service in sigoden aichat via uncontrolled memory allocation in the API endpoint.
- 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-2026-84857?
CVE-2026-84857 is a medium-severity denial of service vulnerability in sigoden aichat, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in sigoden aichat up to 0.30.4. This affects an unknown function of the file src/serve.rs of the component API Endpoint. This manipulation causes uncontrolled memory allocation. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-84857?
How do I fix CVE-2026-84857?
No fix has been published for CVE-2026-84857 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-2026-84857 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84857 exists.
Sources
Also known as GHSA-w2m4-pj9f-6rwh.