{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6126/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-6126"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["CVE-2026-6126","authentication-bypass","web-application"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-6126, has been discovered in zhayujie chatgpt-on-wechat CowAgent version 2.0.4. This flaw resides within an unspecified function of the Administrative HTTP Endpoint component. Successful exploitation of this vulnerability allows remote attackers to bypass authentication mechanisms, potentially leading to unauthorized access and control over the affected system. The vulnerability is due to missing authentication checks on a critical function. Publicly available exploits exist, increasing the likelihood of exploitation. The project maintainers were notified; however, there has been no response at the time of this writing. This poses a significant risk to any deployment of chatgpt-on-wechat CowAgent 2.0.4 accessible over a network.\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 2.0.4.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP request targeting the Administrative HTTP Endpoint.\u003c/li\u003e\n\u003cli\u003eThe malicious request bypasses authentication due to the missing authentication vulnerability (CVE-2026-6126).\u003c/li\u003e\n\u003cli\u003eThe request executes an unauthorized administrative function.\u003c/li\u003e\n\u003cli\u003eAttacker gains unauthorized access to sensitive data or configuration.\u003c/li\u003e\n\u003cli\u003eAttacker deploys a persistent backdoor for long-term access.\u003c/li\u003e\n\u003cli\u003eAttacker uses the backdoor to pivot to other systems or networks.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-6126 can lead to complete compromise of the chatgpt-on-wechat CowAgent instance. This may enable attackers to access sensitive data, modify configurations, or disrupt services. Given that the application integrates with WeChat, a successful attack might expose sensitive user data or allow the attacker to conduct further attacks via the compromised instance. Due to the ease of exploitation and public availability of exploit code, the risk is considered high.\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 to address CVE-2026-6126 as soon as they are released.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity targeting the Administrative HTTP Endpoint using the Sigma rule provided below.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the potential impact of a compromised CowAgent instance.\u003c/li\u003e\n\u003cli\u003eDeploy a web application firewall (WAF) with rules to detect and block exploit attempts targeting CVE-2026-6126.\u003c/li\u003e\n\u003cli\u003eConduct regular security audits of the chatgpt-on-wechat CowAgent deployment to identify and remediate potential vulnerabilities.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-12T11:16:16Z","date_published":"2026-04-12T11:16:16Z","id":"/briefs/2026-04-cowagent-auth-bypass/","summary":"CVE-2026-6126 is an unauthenticated remote code execution vulnerability in zhayujie chatgpt-on-wechat CowAgent 2.0.4 due to missing authentication in the Administrative HTTP Endpoint.","title":"zhayujie chatgpt-on-wechat CowAgent Authentication Bypass Vulnerability (CVE-2026-6126)","url":"https://feed.craftedsignal.io/briefs/2026-04-cowagent-auth-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed — CVE-2026-6126","version":"https://jsonfeed.org/version/1.1"}