Authenticated internal-data disclosure via unvalidated redirects
Published Jul 15, 2026 · Updated Jul 15, 2026
SSRF in FastGPT before 4.15.0-beta5 allows remote authenticated users to read protected internal HTTP responses through workflows. The shared axios request interceptor checks only the caller-supplied URL, while axios follows each Location target without rerunning isInternalAddress(). A user able to create or run workflows can redirect an HTTP node to loopback, cloud metadata, or internal services and receive the response body.
Summary
What happened
SSRF in FastGPT before 4.15.0-beta5 allows remote authenticated users to read protected internal HTTP responses through workflows. The shared axios request interceptor checks only the caller-supplied URL, while axios follows each Location target without rerunning isInternalAddress(). A user able to create or run workflows can redirect an HTTP node to loopback, cloud metadata, or internal services and receive the response body.
The record
- CVE
- CVE-2026-61646
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Vendor
- Labring
- Product
- FastGPT
- Classifications
- CWE-918, T1552.005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 15, 2026CVE publishedPublication date reported by the CVE source.
- Jul 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 4.15.0-beta5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-g969-67mv-2qxq proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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