CVE-2026-84857: sigoden aichat API Endpoint serve.rs memory allocation

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-02 · updated 2026-09-28
Weakness: CWE-400

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.

Affected products

sigoden aichat: 0.30.0, 0.30.1, 0.30.2, 0.30.3, 0.30.4

References

https://github.com/outlookgp/CVE/tree/main/AIChat_Serve_Request_Body_DoS_Report
https://vuldb.com/cve/CVE-2026-84857
https://vuldb.com/submit/886265
https://vuldb.com/vuln/398132
https://vuldb.com/vuln/398132/cti

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