CVE-2026-6129 | zhayujie chatgpt-on-wechat CowAgent up to 2.0.4 Agent Mode Service missing authentication (Issue 2741)

VDB-356992 · CVE-2026-6129 · ISSUE 2741 ZHAYUJIE CHATGPT-ON-WECHAT COWAGENT UP TO 2.0.4 AGENT MODE SERVICE MISSING AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.4 $0-$5k 2.16+ Summaryinfo A vulnerability was found in zhayujie chatgpt-on-wechat CowAgent up to 2.0.4. It has been declared as critical. This impacts an unknown function of the component Agent Mode Service. Executing a manipulation can lead to missing authentication. This vulnerability is tracked as CVE-2026-6129. The attack can be launched remotely. Moreover, an exploit is present. The application of restrictive firewalling is recommended. The project was informed of the problem early through an issue report but has not responded yet. Detailsinfo A vulnerability was found in zhayujie chatgpt-on-wechat CowAgent up to 2.0.4. It has been declared as critical. This vulnerability affects some unknown processing of the component Agent Mode Service. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. 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-2026-6129. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet. Proper firewalling of is able to address this issue. Productinfo Type Chat Software Vendor zhayujie Name chatgpt-on-wechat CowAgent Version 2.0.0 2.0.1 2.0.2 2.0.3 2.0.4 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 6.4 VulDB Base Score: 7.3 VulDB Temp Score: 6.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Missing authentication CWE: CWE-306 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Firewall Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/12/2026 Advisory disclosed 04/12/2026 +0 days VulDB entry created 04/12/2026 +0 days VulDB entry last update Sourcesinfo Advisory: 2741 Status: Not defined CVE: CVE-2026-6129 (🔒) GCVE (CVE): GCVE-0-2026-6129 GCVE (VulDB): GCVE-100-356992 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/12/2026 06:28 Changes: 04/12/2026 06:28 (58) Complete: 🔍 Submitter: York Shen Cache ID: 99:0F3:101 Submitinfo Accepted Submit #795272: zhayujie chatgpt-on-wechat (CowAgent) 2.0.4 Unauthenticated Remote Code Execution (by York Shen) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸