{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/vanna-ai/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5320"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["authentication-bypass","cve-2026-5320","vanna-ai"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical authentication bypass vulnerability, identified as CVE-2026-5320, affects vanna-ai vanna versions up to 2.0.2. The vulnerability lies within the Chat API Endpoint located at \u003ccode\u003e/api/vanna/v2/\u003c/code\u003e. Successful exploitation allows remote attackers to bypass authentication mechanisms through a yet unspecified manipulation of the API endpoint. Public exploits are available, increasing the risk of widespread exploitation. The vendor has been unresponsive to disclosure attempts, further raising the urgency for mitigation. This vulnerability allows attackers to interact with the Chat API without proper authorization, potentially leading to data breaches, unauthorized actions, or disruption of service.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable vanna-ai vanna instance running a version up to 2.0.2.\u003c/li\u003e\n\u003cli\u003eThe attacker sends a crafted request to the \u003ccode\u003e/api/vanna/v2/\u003c/code\u003e Chat API endpoint.\u003c/li\u003e\n\u003cli\u003eThe request exploits the missing authentication vulnerability (CVE-2026-5320) through an unspecified manipulation.\u003c/li\u003e\n\u003cli\u003eThe server improperly processes the request without requiring valid authentication credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker gains unauthorized access to the Chat API functionality.\u003c/li\u003e\n\u003cli\u003eThe attacker interacts with the API, potentially retrieving sensitive information or executing unauthorized actions.\u003c/li\u003e\n\u003cli\u003eThe attacker may leverage the unauthorized access to compromise user accounts or exfiltrate data.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5320 allows attackers to bypass authentication and gain unauthorized access to the vanna-ai vanna Chat API. This can lead to the compromise of user data, unauthorized actions performed on behalf of legitimate users, and potential disruption of the service. The lack of vendor response and the availability of public exploits significantly increase the risk and potential impact of this vulnerability. Given the nature of AI chatbot applications, sensitive information handled by the application could be exposed, damaging data confidentiality.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply immediate patching or mitigation measures to vanna-ai vanna instances running versions up to 2.0.2. Consult the vendor\u0026rsquo;s website for any available patches, or consider applying a reverse proxy rule to enforce authentication on the \u003ccode\u003e/api/vanna/v2/\u003c/code\u003e endpoint until a patch is available.\u003c/li\u003e\n\u003cli\u003eDeploy the provided Sigma rule \u003ccode\u003eDetect vanna-ai vanna Authentication Bypass Attempt\u003c/code\u003e to identify and alert on exploitation attempts targeting the \u003ccode\u003e/api/vanna/v2/\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity targeting the \u003ccode\u003e/api/vanna/v2/\u003c/code\u003e endpoint, paying close attention to unusual request patterns or error codes, and investigate any anomalies.\u003c/li\u003e\n\u003cli\u003eImplement web application firewall (WAF) rules to block requests exploiting CVE-2026-5320 based on known exploit patterns.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-02T05:16:04Z","date_published":"2026-04-02T05:16:04Z","id":"/briefs/2026-04-vanna-auth-bypass/","summary":"CVE-2026-5320 describes an unauthenticated remote access vulnerability in vanna-ai vanna up to version 2.0.2 via manipulation of the /api/vanna/v2/ Chat API endpoint, potentially allowing unauthorized access and actions.","title":"vanna-ai vanna Authentication Bypass Vulnerability (CVE-2026-5320)","url":"https://feed.craftedsignal.io/briefs/2026-04-vanna-auth-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed — Vanna-Ai","version":"https://jsonfeed.org/version/1.1"}