CVE-2026-61684
FastGPT: Unauthenticated cross-tenant data access via forgeable plugin-invoke JWT (default INVOKE_TOKEN_SECRET='token')
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
FastGPT is a knowledge-based AI application platform. In 4.15.0-beta4, FastGPT plugin invoke reverse-call endpoints under /api/invoke/* authenticate only by verifying a JWT signed with INVOKE_TOKEN_SECRET, which defaults to the constant string token and was not set in official deployment templates. An unauthenticated attacker can self-sign an HS256 JWT and reach /api/invoke/userInfo to disclose cross-tenant user PII by attacker-supplied tmbId values, or /api/invoke/fileUpload to write attacker-controlled content into chat files. This issue is fixed in version 4.15.0-beta5.
| CWE | CWE-798 |
| Vendor | labring |
| Product | fastgpt |
| Published | Jul 15, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
labring / FastGPT
= 4.15.0-beta4
References
github.com: https://github.com/labring/FastGPT/security/advisories/GHSA-w732-rq8c-chc8 github.com: https://github.com/labring/FastGPT/pull/7170 github.com: https://github.com/labring/FastGPT/commit/f5f1e58b25571b7107ca49d9bf96bb2b0e0a620a github.com: https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta5