{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5971/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5971"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["code-injection","vulnerability","metagpt","CVE-2026-5971"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA code injection vulnerability, identified as CVE-2026-5971, has been discovered in FoundationAgents MetaGPT versions up to 0.8.1. The vulnerability resides in the \u003ccode\u003eActionNode.xml_fill\u003c/code\u003e function within the \u003ccode\u003emetagpt/actions/action_node.py\u003c/code\u003e file, specifically related to the XML Handler component. This flaw allows a remote attacker to inject malicious code by exploiting improper neutralization of directives in dynamically evaluated code. A proof-of-concept exploit is publicly available, increasing the likelihood of exploitation. The project maintainers were notified of the vulnerability via a pull request but have not yet addressed the issue. This poses a significant risk to systems using vulnerable versions of MetaGPT, especially those exposed to untrusted input.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a MetaGPT instance running a vulnerable version (\u0026lt;= 0.8.1).\u003c/li\u003e\n\u003cli\u003eThe attacker crafts malicious XML input designed to exploit the \u003ccode\u003eActionNode.xml_fill\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eThe attacker sends the malicious XML to the MetaGPT instance through a network request, likely via an API endpoint.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eActionNode.xml_fill\u003c/code\u003e function processes the malicious XML, failing to properly neutralize directives.\u003c/li\u003e\n\u003cli\u003eThe injected code is dynamically evaluated within the MetaGPT environment.\u003c/li\u003e\n\u003cli\u003eThe attacker gains arbitrary code execution within the MetaGPT process, potentially escalating privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the code execution to compromise the system, potentially gaining access to sensitive data.\u003c/li\u003e\n\u003cli\u003eThe attacker exfiltrates sensitive data or causes other damage based on their objectives.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5971 can lead to arbitrary code execution on systems running vulnerable versions of FoundationAgents MetaGPT (\u0026lt;= 0.8.1). This could allow attackers to steal sensitive information, modify system configurations, install malware, or disrupt services. The availability of a public exploit increases the likelihood of widespread attacks targeting vulnerable systems. The specific number of potential victims and targeted sectors are currently unknown, but any system running MetaGPT and processing potentially malicious XML input is at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply any available patches or updates for FoundationAgents MetaGPT to address CVE-2026-5971 as soon as they are released.\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization measures to prevent malicious XML from being processed by the \u003ccode\u003eActionNode.xml_fill\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity related to XML processing, such as unusual requests or errors. Deploy the Sigma rule \u003ccode\u003eDetect MetaGPT XML Injection Attempt\u003c/code\u003e to identify potential exploit attempts based on HTTP request characteristics.\u003c/li\u003e\n\u003cli\u003eEnable process monitoring to detect suspicious processes spawned by MetaGPT, especially those with network connections. Deploy the Sigma rule \u003ccode\u003eDetect MetaGPT Suspicious Child Processes\u003c/code\u003e to identify potential post-exploitation activity.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-09T18:17:04Z","date_published":"2026-04-09T18:17:04Z","id":"/briefs/2024-01-29-metagpt-code-injection/","summary":"A code injection vulnerability exists in FoundationAgents MetaGPT \u003c= 0.8.1 within the ActionNode.xml_fill function, allowing remote attackers to inject code due to improper neutralization of directives in dynamically evaluated code.","title":"FoundationAgents MetaGPT Code Injection Vulnerability (CVE-2026-5971)","url":"https://feed.craftedsignal.io/briefs/2024-01-29-metagpt-code-injection/"}],"language":"en","title":"CraftedSignal Threat Feed — CVE-2026-5971","version":"https://jsonfeed.org/version/1.1"}