CVE-2026-61684

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Source
https://cve.org/CVERecord?id=CVE-2026-61684
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61684.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-61684
Aliases
  • GHSA-w732-rq8c-chc8
Published
2026-07-15T14:28:22Z
Modified
2026-10-28T02:31:02Z
Severity
  • 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
FastGPT: Unauthenticated cross-tenant data access via forgeable plugin-invoke JWT (default INVOKE_TOKEN_SECRET='token')
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-798"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61684.json"
}
References

Affected packages

Git / github.com/labring/fastgpt

Affected ranges

Type
GIT
Repo
https://github.com/labring/fastgpt
Events
Introduced
8784b62215721c87e7bd2f35d45a4e29e07d38f5
Fixed
f5f1e58b25571b7107ca49d9bf96bb2b0e0a620a
Fixed
0c1840c7773c5be5d777f86228651479e02155db
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "= 4.15.0-beta4"
                },
                {
                    "last_affected":  "= 4.15.0-beta4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "f5f1e58b25571b7107ca49d9bf96bb2b0e0a620a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.15.0-beta5",
            "range":  [
                {
                    "fixed":  "0c1840c7773c5be5d777f86228651479e02155db"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

= 4.*
= 4.15.0-beta4
v4.*
v4.15.0-beta4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61684.json"