High severity · published Jul 7, 2026
CVE-2026-54607
FastGPT: SSRF in HTTP-tool OpenAPI schema importer via SwaggerParser $ref (bypasses the isInternalAddress guard)
7.7
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FA
FastGPT · labring
< 4.15.0-beta4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54607
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54607
github.com
https://github.com/labring/FastGPT/commit/1d7b8768aecd53ae59372fd68b10af0e80722c79
github.com
https://github.com/labring/FastGPT/pull/7073
github.com
https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta4
github.com
https://github.com/labring/FastGPT/security/advisories/GHSA-72hf-5382-2mq9
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