What is CVE-2026-15628?

CVE-2026-15628 is a medium-severity vulnerability in Zhayujie Chatgpt-On-Wechat Cowagent, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-07-14.

How severe is CVE-2026-15628?

Medium severity. CVSS v3 base score is 6.3 out of 10.

SSRF in Zhayujie Chatgpt-On-Wechat Cowagent

CVE-2026-15628

A security flaw has been discovered in zhayujie chatgpt-on-wechat CowAgent up to 2.1.1. This issue affects the function Vision._download_to_data_url of the file agent/tools/vision/vision.py of the component Vision Tool. Performing a manipulation of the argument image results in server-side request forgery. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.1.2 is capable of addressing this issue. The patch is named e85290cddcbb5ffc9c235927f4c92e5b4c3ec264. The affected component should be upgraded.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-07-14 · last modified 2026-07-14.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (30.2th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Zhayujie Chatgpt-On-Wechat Cowagent — versions 2.1.0, 2.1.1, 2.1.2

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

vuldb.com/vuln/378130 (technical-description, vdb-entry)
vuldb.com/vuln/378130/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-15628 (third-party-advisory)
vuldb.com/submit/855849 (third-party-advisory)
github.com/zhayujie/CowAgent/issues/2878 (issue-tracking, exploit)
github.com/zhayujie/CowAgent/pull/2886 (issue-tracking, patch)
github.com/zhayujie/CowAgent/commit/e85290cddcbb5ffc9c235927f4c92e5b4c3ec264 (patch)
github.com/zhayujie/CowAgent/releases/tag/2.1.2 (patch)

Frequently asked questions

What is CVE-2026-15628?: CVE-2026-15628 is a medium-severity vulnerability in Zhayujie Chatgpt-On-Wechat Cowagent, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-07-14.
How severe is CVE-2026-15628?: Medium severity. CVSS v3 base score is 6.3 out of 10.