What is CVE-2026-42345?

CVE-2026-42345 is a high-severity vulnerability in Labring Fastgpt, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-05-08.

How severe is CVE-2026-42345?

High severity. CVSS v3 base score is 7.7 out of 10.

SSRF in Labring Fastgpt

CVE-2026-42345

FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's isInternalAddress() function in packages/service/common/system/utils.ts blocks cloud metadata endpoints using a fullUrl.startsWith() check against a hardcod…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (9.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Labring Fastgpt — versions <= 4.14.11

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42345?: CVE-2026-42345 is a high-severity vulnerability in Labring Fastgpt, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-05-08.
How severe is CVE-2026-42345?: High severity. CVSS v3 base score is 7.7 out of 10.