CVE-2026-84857CWE-400CWE-789denial-of-service

CVE-2026-84857

Medium · published September 3, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
49.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00637 · 49.9th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-09-03T00:17Z
References (5)
https://vuldb.com/cve/CVE-2026-84857 · [email protected]https://vuldb.com/submit/886265 · [email protected]https://vuldb.com/vuln/398132 · [email protected]https://vuldb.com/vuln/398132/cti · [email protected]https://github.com/outlookgp/CVE/tree/main/AIChat_Serve_Request_Body_DoS_Report · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 20:00Z
    sigoden aichat API Endpoint serve.rs memory allocation
    cvelistv5