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TI-2026-70803 Aliases CVE-2026-108769GHSA-3495-753p-x98c

Denial of service in zhayujie CowAgent Markdown rendering

Priority MEDIUM 57CWE-404Published · Updated

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 2.2.0 contains a flaw in an unspecified part of the file Markdown.tsx in its Markdown rendering component. Improper resource shutdown or release (CWE-404) lets a remote attacker with low privileges cause a denial of service. A public exploit has been released.

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 2.2.0. This affects an unknown part of the file Markdown.tsx of the component Markdown Rendering. The manipulation results in denial of service. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00276 20th 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

VendorProductAffected versionsFixed inStatusSource
zhayujieCowAgent2.0; 2.1; 2.2.0—No fix listedCNA
  • CowAgent Vendorzhayujie Affected 2.0; 2.1; 2.2.0 Fixed in — No fix listed CNA

CPE names CNA · 1

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

Remediation

The sources list no fixed version for zhayujie CowAgent.

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

Timeline

  1. 2026-10-11 Threatist record created from CVE-2026-108769
  2. 2026-10-12 Alias added: GHSA-3495-753p-x98c
  3. 2026-10-15 CISA SSVC decision points changed
  4. 2026-10-15 Priority changed: LOW → MEDIUM

References

Exploit 1

  • 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-2026-70799 Unlimited resource allocation in zhayujie CowAgent tool-call parsing 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