TI-2026-70664 Aliases CVE-2026-108681 GHSA-9wr9-h75r-7xj4

Denial of service in zhayujie CowAgent Web Console

MEDIUM 57CWE-404Published 2026-10-11 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

zhayujie CowAgent up to 2.1.7 has a flaw in the Web Console in channel/web/web_channel.py where manipulating the session_id argument causes denial of service (CWE-404). A remote attacker with low privileges can trigger it. A public exploit has been released. Version 2.1.7 only partly mitigates the issue with a 512MB body cap.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A security flaw has been discovered in zhayujie CowAgent up to 2.1.7. Impacted is an unknown function of the file channel/web/web_channel.py of the component Web Console. The manipulation of the argument session_id results in denial of service. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. Version 2.1.7 (commit dec28324) only partly mitigates via a 512MB body cap. The vendor was contacted early about this disclosure.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00271 19th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
zhayujie	CowAgent	2.1.0; 2.1.1; 2.1.2; 2.1.3; 2.1.4; 2.1.5; 2.1.6; 2.1.7	—	No fix listed	CNA

CowAgent Vendorzhayujie Affected 2.1.0; 2.1.1; 2.1.2; 2.1.3; 2.1.4; 2.1.5; 2.1.6; 2.1.7 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zhayujie:cowagent::::::::	—	—	zhayujie

cpe:2.3:a:zhayujie:cowagent:*:*:*:*:*:*:*:* Versions — — ·zhayujie

Remediation

The sources list no fixed version for CowAgent. The 512MB body cap in version 2.1.7 only partly mitigates the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-11 Threatist record created from CVE-2026-108681
2026-10-11 Alias added: GHSA-9wr9-h75r-7xj4
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: LOW → MEDIUM

References

Exploit 1

https://github.com/hackerguopeng/cve/tree/main/CowAgent_Web_Message_Queue_Thread_SSE_DoS_Report

TI-2026-12902 zhayujie CowAgent Vision Tool vision.py _download_to_data_url server-side request forgery CVSS 4.0MEDIUM 6.9
TI-2026-12400 zhayujie chatgpt-on-wechat CowAgent wx Endpoint common.py verify_server missing authentication CVSS 4.0MEDIUM 6.9
TI-2026-08952 zhayujie chatgpt-on-wechat Bash Tool bash.py _get_safety_warning os command injection CVSS 4.0MEDIUM 6.9
TI-2026-05370 zhayujie chatgpt-on-wechat CowAgent Administrative HTTP Endpoint missing authentication CVSS 4.0MEDIUM 6.9
TI-2026-05261 zhayujie chatgpt-on-wechat CowAgent API Memory Content Endpoint service.py dispatch path traversal CVSS 4.0MEDIUM 6.9
TI-2026-70803 Denial of service in zhayujie CowAgent Markdown rendering CVSS 4.0MEDIUM 5.3

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences