Medium severity · published Oct 11, 2026
CVE-2026-108681
zhayujie CowAgent Web Console web_channel.py denial of service
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
CowAgent · zhayujie
2.1.0; 2.1.1; 2.1.2; 2.1.3; 2.1.4; 2.1.5; +2 more · source: vendor
Affected product
CO
CowAgent
zhayujie
More from CowAgent
7.3
CVE-2026-15330
zhayujie CowAgent Vision Tool vision.py _download_to_data_url server-side request forgery
6.3
CVE-2026-18992
zhayujie CowAgent Self-Evolution Review Agent executor.py _select_tools authorization
6.3
CVE-2026-16194
zhayujie CowAgent web_fetch.py WebFetch.execute server-side request forgery
6.3
CVE-2026-15332
zhayujie CowAgent Message Endpoint channel.py authorization
5.4
CVE-2026-108682
zhayujie CowAgent Web Console upload read denial of service