CVE-2026-108683: DoS (CVSS 4.3)

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-789 CWE-789

References

Other References

https://github.com/lche511/cve/tree/main/CowAgent_Channel_Media_Download_DoS_Report https://github.com/zhayujie/CowAgent/ https://github.com/zhayujie/CowAgent/commit/b7967210268fc4c0afea1078223e74e7e96a8a54 https://github.com/zhayujie/CowAgent/releases/tag/2.2.0 https://vuldb.com/cve/CVE-2026-108683 https://vuldb.com/submit/958015 https://vuldb.com/vuln/416391 https://vuldb.com/vuln/416391/cti

Frequently Asked Questions

What is CVE-2026-108683? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-108683? +

CVE-2026-108683 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0031, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108683? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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