zhayujie CowAgent up to 2.1.1 web_fetch.py WebFetch.execute url server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k1.04+

Summaryinfo

A vulnerability was found in zhayujie CowAgent up to 2.1.1. It has been rated as critical. This vulnerability affects the function WebFetch.execute of the file agent/tools/web_fetch/web_fetch.py. The manipulation of the argument url leads to server-side request forgery. This vulnerability is traded as CVE-2026-16194. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability, which was classified as critical, has been found in zhayujie CowAgent up to 2.1.1. This issue affects the function WebFetch.execute of the file agent/tools/web_fetch/web_fetch.py. The manipulation of the argument url with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-16194. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Upgrading to version 2.1.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ea47f3097eed4f8295c4cb3d76ecb97e0f43d632 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CowAgent 2.1.2
Patch: ea47f3097eed4f8295c4cb3d76ecb97e0f43d632

Timelineinfo

07/18/2026 Advisory disclosed
07/18/2026 +0 days VulDB entry created
07/18/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 2889
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-16194 (🔒)
GCVE (CVE): GCVE-0-2026-16194
GCVE (VulDB): GCVE-100-380009
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/18/2026 04:42
Changes: 07/18/2026 04:42 (64)
Complete: 🔍
Submitter: Eric-x
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #857620: zhayujie CowAgent 2.1.1 Server-Side Request Forgery (CWE-918) (by Eric-x)

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