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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Sigoden
  • Aichat

No data.

No data.

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

Thu, 03 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 02 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title sigoden aichat API Endpoint serve.rs memory allocation
First Time appeared Sigoden
Sigoden aichat
Weaknesses CWE-400
CWE-789
CPEs cpe:2.3:a:sigoden:aichat:*:*:*:*:*:*:*:*
Vendors & Products Sigoden
Sigoden aichat
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 6.9, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-09-02T20:00:08.589Z

Updated: 2026-09-03T15:36:18.054Z

Reserved: 2026-09-02T13:25:34.895Z

Link: CVE-2026-84857

cve-icon Vulnrichment

Updated: 2026-09-03T15:36:14.880Z

cve-icon NVD

Status : Deferred

Published: 2026-09-02T20:17:42.753

Modified: 2026-09-03T17:25:25.113

Link: CVE-2026-84857

cve-icon Redhat

No data.