CVE-2026-54607: CWE-918: Server-Side Request Forgery (SSRF) in labring FastGPT
FastGPT is a knowledge-based AI application platform. Prior to 4.15.0-beta4, the HTTP-tool OpenAPI schema importer validates only the top-level URL before passing it to SwaggerParser.bundle, whose remote reference resolver fetches $ref URLs without FastGPT's internal-address guard and returns fetched content inline, allowing an authenticated team member to read internal services or cloud metadata. This issue is fixed in version 4.15.0-beta4.
AI Analysis
Technical Summary
FastGPT versions prior to 4.15.0-beta4 contain an SSRF vulnerability due to insufficient validation of remote references in the OpenAPI schema importer. Specifically, the importer validates only the top-level URL before passing it to SwaggerParser.bundle, whose remote reference resolver fetches $ref URLs without applying FastGPT's internal-address guard. This flaw enables an authenticated team member to retrieve internal service data or cloud metadata by exploiting the SSRF. The vulnerability is addressed in version 4.15.0-beta4.
Potential Impact
An authenticated team member can exploit this SSRF vulnerability to read sensitive internal services or cloud metadata, potentially exposing confidential information. The vulnerability does not affect confidentiality, integrity, or availability beyond the described information disclosure. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade FastGPT to version 4.15.0-beta4 or later, where this SSRF vulnerability is fixed. No other mitigation steps are indicated by the vendor advisory.
CVE-2026-54607: CWE-918: Server-Side Request Forgery (SSRF) in labring FastGPT
Description
FastGPT is a knowledge-based AI application platform. Prior to 4.15.0-beta4, the HTTP-tool OpenAPI schema importer validates only the top-level URL before passing it to SwaggerParser.bundle, whose remote reference resolver fetches $ref URLs without FastGPT's internal-address guard and returns fetched content inline, allowing an authenticated team member to read internal services or cloud metadata. This issue is fixed in version 4.15.0-beta4.
CVSS v3.1
Score 7.7high
Affected software
pkg:github/labring/FastGPTRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FastGPT versions prior to 4.15.0-beta4 contain an SSRF vulnerability due to insufficient validation of remote references in the OpenAPI schema importer. Specifically, the importer validates only the top-level URL before passing it to SwaggerParser.bundle, whose remote reference resolver fetches $ref URLs without applying FastGPT's internal-address guard. This flaw enables an authenticated team member to retrieve internal service data or cloud metadata by exploiting the SSRF. The vulnerability is addressed in version 4.15.0-beta4.
Potential Impact
An authenticated team member can exploit this SSRF vulnerability to read sensitive internal services or cloud metadata, potentially exposing confidential information. The vulnerability does not affect confidentiality, integrity, or availability beyond the described information disclosure. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade FastGPT to version 4.15.0-beta4 or later, where this SSRF vulnerability is fixed. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T19:45:23.540Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4d7350c9d9e3dbe3e36b1a
Added to database: 07/07/2026, 21:44:48 UTC
Last enriched: 07/15/2026, 12:14:15 UTC
Last updated: 08/20/2026, 22:52:13 UTC
Views: 73
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