zhayujie CowAgent up to 2.1.1 Self-Evolution Review Agent executor.py _select_tools authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7$0-$5k2.97

Summaryinfo

A vulnerability labeled as critical has been found in zhayujie CowAgent up to 2.1.1. This issue affects the function _select_tools of the file agent/evolution/executor.py of the component Self-Evolution Review Agent. Executing a manipulation can lead to authorization. This vulnerability appears as CVE-2026-18992. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in zhayujie CowAgent up to 2.1.1. It has been declared as critical. This vulnerability affects the function _select_tools of the file agent/evolution/executor.py of the component Self-Evolution Review Agent. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-18992. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

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: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/05/2026 Advisory disclosed
08/05/2026 +0 days VulDB entry created
08/05/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 2904
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-18992 (🔒)
GCVE (CVE): GCVE-0-2026-18992
GCVE (VulDB): GCVE-100-386368
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/05/2026 21:09
Changes: 08/05/2026 21:09 (59)
Complete: 🔍
Submitter: ChenMarry
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #862609: zhayujie CowAgent 2.1.1 Incorrect Authorization (CWE-863) (by ChenMarry)

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