{"id":"CVE-2025-66565","revision":"6ebc30ccaf7d4094b1deb37e3e0928cd","records":[{"revision":"6ebc30ccaf7d4094b1deb37e3e0928cd","observedAt":"2026-10-25T03:17:36.152+00:00","statement":{"source":"nvd","id":"CVE-2025-66565","aliases":[],"title":"Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUI…","description":"Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID \"00000000-0000-0000-0000-000000000000\". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4.","state":0,"publishedAt":"2025-12-09T16:18:21.097+00:00","modifiedAt":"2026-10-07T20:10:01.97+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/gofiber/utils/commit/6c6cf047032b9c8dff43d29f990b4b10e9b02d47","https://github.com/gofiber/utils/security/advisories/GHSA-m98w-cqp3-qcqr"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-66565","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-252","CWE-331","CWE-338"],"productCriteria":["cpe:2.3:a:gofiber:utils:*:*:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta1:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta10:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta11:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta12:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta13:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta14:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta2:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta3:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta4:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta5:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta6:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta7:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta8:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:beta9:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:rc1:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:rc2:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:rc3:*:*:*:go:*:*","cpe:2.3:a:gofiber:utils:2.0.0:rc4:*:*:*:go:*:*"],"sourceDates":{"published":"2025-12-09T16:18:21.097","lastModified":"2026-10-07T20:10:01.970"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-66565","identifiers":["CVE-2025-66565"]},"retained":false,"historicalAffected":[]}],"coverage":[]}