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

Quick assessment

Affected
sigoden aichat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

sigoden AIChat是sigoden个人开发者开源的一款命令行AI聊天工具。 sigoden AIChat 0.30.4及之前版本存在资源管理错误漏洞，该漏洞源于API Endpoint组件中文件src/serve.rs的未知函数存在不受控制的内存分配问题，可能导致远程拒绝服务攻击。

CVSS 5.3 · Medium EPSS 0.64% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
sigoden aichat 0.30.0 affected
0.30.1 affected
0.30.2 affected
0.30.3 affected
0.30.4 affected
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I. Basic Information for CVE-2026-84857

Vulnerability Information
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Vulnerability Title
sigoden aichat API Endpoint serve.rs memory allocation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
sigoden AIChat 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sigoden AIChat是sigoden个人开发者开源的一款命令行AI聊天工具。 sigoden AIChat 0.30.4及之前版本存在资源管理错误漏洞，该漏洞源于API Endpoint组件中文件src/serve.rs的未知函数存在不受控制的内存分配问题，可能导致远程拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sigoden aichat 0.30.0 cpe:2.3:a:sigoden:aichat:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-84857

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III. Intelligence Information for CVE-2026-84857

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Vendor Advisories for CVE-2026-84857 (2)

Proof of Concept for CVE-2026-84857 (1)

Other References for CVE-2026-84857 (1)

IV. Related Vulnerabilities

Same weakness: CWE-789