Vulnerability in Gofiber Fiber
CVE-2025-66630
Fiber is an Express inspired web framework written in Go. Before 2.52.11, on Go versions prior to 1.24, the underlying crypto/rand implementation can return an error if secure randomness cannot be obtained. Because no error is returned by…
EPSS: 0.005 (37.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Gofiber Fiber — versions < 2.52.11
- Golang Go
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-66630?
- CVE-2025-66630 is a critical-severity vulnerability in Gofiber Fiber, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 9.4/10. Published 2026-02-09.
- How severe is CVE-2025-66630?
- Critical severity. CVSS v3 base score is 9.4 out of 10.