Medium severity · published Oct 11, 2026
CVE-2026-108683
zhayujie CowAgent Media Download memory allocation
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
A security vulnerability has been detected in zhayujie CowAgent up to 2.1.9. The impacted element is an unknown function of the component Media Download Handler. Such manipulation leads to uncontrolled memory allocation. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.2.0 is sufficient to resolve this issue. The name of the patch is b7967210268fc4c0afea1078223e74e7e96a8a54. You should upgrade the affected component.
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 24% 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; +4 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108683
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108683
vdb-entry
https://vuldb.com/vuln/416391
signature
https://vuldb.com/vuln/416391/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-108683
third-party-advisory
https://vuldb.com/submit/958015
exploit
https://github.com/lche511/cve/tree/main/CowAgent_Channel_Media_Download_DoS_Report
patch
https://github.com/zhayujie/CowAgent/commit/b7967210268fc4c0afea1078223e74e7e96a8a54
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