{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6129/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-6129"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["cve-2026-6129","authentication-bypass","chatgpt-on-wechat"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical authentication bypass vulnerability, CVE-2026-6129, has been identified in zhayujie chatgpt-on-wechat CowAgent versions up to 2.0.4. This flaw resides within the Agent Mode Service component and enables unauthenticated remote attackers to execute unauthorized actions by manipulating requests. The vulnerability stems from missing authentication checks, allowing malicious actors to potentially gain unauthorized access and control over affected systems. Exploit code is publicly available, increasing the risk of widespread exploitation. The vendor has been notified, but has not yet responded to the report.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable instance of zhayujie chatgpt-on-wechat CowAgent running version 2.0.4 or earlier.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious request targeting the Agent Mode Service.\u003c/li\u003e\n\u003cli\u003eThe malicious request bypasses authentication checks due to the missing authentication vulnerability (CVE-2026-6129).\u003c/li\u003e\n\u003cli\u003eThe Agent Mode Service processes the crafted request without proper authorization.\u003c/li\u003e\n\u003cli\u003eAttacker gains unauthorized access to sensitive functions and data within the application.\u003c/li\u003e\n\u003cli\u003eAttacker leverages the gained access to execute arbitrary commands or manipulate application settings.\u003c/li\u003e\n\u003cli\u003eAttacker potentially escalates privileges within the application.\u003c/li\u003e\n\u003cli\u003eAttacker achieves full control over the affected chatgpt-on-wechat CowAgent instance.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-6129 can lead to complete compromise of the chatgpt-on-wechat CowAgent instance. This includes unauthorized access to user data, modification of application settings, and potentially remote code execution. The lack of authentication allows attackers to perform administrative actions without legitimate credentials. The impact is significant, especially if the affected instance handles sensitive information or is integrated with critical systems.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply available patches or updates for zhayujie chatgpt-on-wechat CowAgent immediately to remediate CVE-2026-6129.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious requests targeting the Agent Mode Service to identify potential exploitation attempts. Deploy the Sigma rule \u003ccode\u003eDetect ChatGPT WeChat CowAgent Authentication Bypass Attempt\u003c/code\u003e to detect exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eImplement strong authentication mechanisms for all application endpoints, especially those handling sensitive data or administrative functions.\u003c/li\u003e\n\u003cli\u003eRestrict network access to the chatgpt-on-wechat CowAgent instance to only authorized users and systems.\u003c/li\u003e\n\u003cli\u003eReview and audit the application\u0026rsquo;s codebase to identify and address any other potential security vulnerabilities.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-12T20:16:19Z","date_published":"2026-04-12T20:16:19Z","id":"/briefs/2026-04-chatgpt-wechat-auth-bypass/","summary":"CVE-2026-6129 is a critical vulnerability in zhayujie chatgpt-on-wechat CowAgent up to version 2.0.4, allowing remote attackers to bypass authentication via manipulation of the Agent Mode Service.","title":"zhayujie chatgpt-on-wechat CowAgent Authentication Bypass (CVE-2026-6129)","url":"https://feed.craftedsignal.io/briefs/2026-04-chatgpt-wechat-auth-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-6129","version":"https://jsonfeed.org/version/1.1"}