CVE-2026-61646: CWE-918: Server-Side Request Forgery (SSRF) in labring FastGPT
CVE-2026-61646 is a Server-Side Request Forgery (SSRF) vulnerability in labring FastGPT prior to version 4.15.0-beta5. The issue arises because the SSRF guard only validates the initial request URL before passing it to axios, which follows redirects by default. An authenticated user can exploit this by configuring an HTTP request node to call a URL that redirects to internal or cloud metadata services that would normally be blocked. This vulnerability is fixed in version 4.15.0-beta5.
AI Analysis
Technical Summary
FastGPT versions prior to 4.15.0-beta5 contain an SSRF vulnerability (CWE-918) where the SSRF guard validates only the initial URL before axios processes the request. Since axios follows HTTP redirects by default, an authenticated workflow user can cause the HTTP request node to access internal or cloud metadata endpoints via a redirect chain, bypassing SSRF protections. The response body from these internal requests is then returned to the workflow caller. This behavior allows unauthorized access to internal resources that the SSRF guard would otherwise block on direct requests. The vulnerability is resolved in FastGPT version 4.15.0-beta5.
Potential Impact
An authenticated user can exploit this SSRF vulnerability to access internal, loopback, or cloud metadata services that are normally protected by the SSRF guard. This may lead to unauthorized disclosure of sensitive internal information. The vulnerability does not require user interaction beyond authentication and has a medium severity with a CVSS 4.0 base score of 6.3.
Mitigation Recommendations
This vulnerability is fixed in FastGPT version 4.15.0-beta5. Users should upgrade to version 4.15.0-beta5 or later to remediate this issue. No other official remediation or temporary fixes are documented. Patch status is not yet confirmed by a vendor advisory; users should verify with labring for the latest remediation guidance.
CVE-2026-61646: CWE-918: Server-Side Request Forgery (SSRF) in labring FastGPT
Description
CVE-2026-61646 is a Server-Side Request Forgery (SSRF) vulnerability in labring FastGPT prior to version 4.15.0-beta5. The issue arises because the SSRF guard only validates the initial request URL before passing it to axios, which follows redirects by default. An authenticated user can exploit this by configuring an HTTP request node to call a URL that redirects to internal or cloud metadata services that would normally be blocked. This vulnerability is fixed in version 4.15.0-beta5.
CVSS v4.0
Score 6.3medium
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-beta5 contain an SSRF vulnerability (CWE-918) where the SSRF guard validates only the initial URL before axios processes the request. Since axios follows HTTP redirects by default, an authenticated workflow user can cause the HTTP request node to access internal or cloud metadata endpoints via a redirect chain, bypassing SSRF protections. The response body from these internal requests is then returned to the workflow caller. This behavior allows unauthorized access to internal resources that the SSRF guard would otherwise block on direct requests. The vulnerability is resolved in FastGPT version 4.15.0-beta5.
Potential Impact
An authenticated user can exploit this SSRF vulnerability to access internal, loopback, or cloud metadata services that are normally protected by the SSRF guard. This may lead to unauthorized disclosure of sensitive internal information. The vulnerability does not require user interaction beyond authentication and has a medium severity with a CVSS 4.0 base score of 6.3.
Mitigation Recommendations
This vulnerability is fixed in FastGPT version 4.15.0-beta5. Users should upgrade to version 4.15.0-beta5 or later to remediate this issue. No other official remediation or temporary fixes are documented. Patch status is not yet confirmed by a vendor advisory; users should verify with labring for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-10T17:38:57.112Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a579dce68715ace43e953e7
Added to database: 07/15/2026, 14:48:46 UTC
Last enriched: 07/15/2026, 15:06:17 UTC
Last updated: 07/15/2026, 15:10:45 UTC
Views: 4
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