{"apiVersion":"1.0","identifier":"CVE-2026-68929","description":"FastGPT is an open-source LLM platform for building AI applications on a knowledge base. In versions prior to 4.15.2, the WeChat (iLink) share-channel endpoints authorize requests using only the public shareId, with no authenticated identity or team-ownership check. As a result, an unauthenticated attacker who knows a victim team-s shareId can take that team-s WeChat bot offline or hijack the channel to their own bot: the logout endpoint is gated only by an existence check yet wipes the outLink-s stored WeChat token, and the QR-code status endpoint performs no authorization at all and writes attacker-supplied bot credentials into the outLink identified by shareId. By generating a QR for a victim shareId, scanning it with their own WeChat, and calling the status endpoint, an attacker binds the victim team-s app to the attacker-s bot, exposing the app-s private responses, displacing the legitimate binding, and consuming the victim-s resources. The shareId is exposed in every shared chat URL, iframe, and embed, so it is not a secret. This issue is fixed in version 4.15.2.","publishedAt":"2026-08-28T00:18:08","lastModifiedAt":"2026-08-28T00:18:08","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68929","cvssScore":9.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00257,"riskScore":0.95,"affectedProduct":"FastGPT","affectedVersions":"<4.15.2","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-68929","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-68929","en":"https://www.redsauce.net/en/cves/CVE-2026-68929","fr":"https://www.redsauce.net/fr/cves/CVE-2026-68929","pt":"https://www.redsauce.net/pt/cves/CVE-2026-68929","de":"https://www.redsauce.net/de/cves/CVE-2026-68929","sk":"https://www.redsauce.net/sk/cves/CVE-2026-68929","el":"https://www.redsauce.net/el/cves/CVE-2026-68929"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-68929"}}