Quick answers
- Is CVE-2026-16194 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16194 being exploited in the wild.
- How severe is CVE-2026-16194?
- Medium severity, with a CVSS score of 6.3, published 18 July 2026.
- Which products and versions are affected?
- Zhayujie CowAgent up to 2.1.1.
- Is there a fix for CVE-2026-16194?
- A patch was published on 2026-06-17: Patch ea47f3097eed4f8295c4cb3d76ecb97e0f43d632 committed Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-16194 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-16194?
- Check whether you run Zhayujie CowAgent at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in CowAgent's 'web_fetch' tool within the WebFetch.execute function in agent/tools/web_fetch/web_fetch.py. The component failed to validate model-supplied URLs, allowing requests to loopback addresses (127.0.0.1), RFC1918 private networks, and cloud metadata endpoints (169.254.169.254). Additionally, the tool followed HTTP redirects without re-validating the target, enabling attackers to bypass initial checks via a 302 redirect from a public to a private address. An attacker can exploit this via remote network access, potentially through prompt injection, to exfiltrate internal service data. The issue is fixed in version 2.1.2 by implementing a shared URL safety validator and manual redirect following with hop-by-hop validation.
Affected products
- zhayujie CowAgent up to 2.1.1
Timeline
- 2026-06-17: patched: Patch ea47f3097eed4f8295c4cb3d76ecb97e0f43d632 committed
- 2026-07-18: disclosed: CVE-2026-16194 published
References
- https://github.com/zhayujie/CowAgent/
- https://github.com/zhayujie/CowAgent/commit/ea47f3097eed4f8295c4cb3d76ecb97e0f43d632
- https://github.com/zhayujie/CowAgent/issues/2889
- https://github.com/zhayujie/CowAgent/pull/2900
- https://github.com/zhayujie/CowAgent/releases/tag/2.1.2
- https://vuldb.com/cve/CVE-2026-16194
- https://vuldb.com/submit/857620