{"id":"EUVD-2025-201791","revision":"e508f27a3e26466cb8b0d07abdbdfa46","records":[{"revision":"e508f27a3e26466cb8b0d07abdbdfa46","observedAt":"2026-11-01T01:15:23.468+00:00","statement":{"source":"euvd","id":"EUVD-2025-201791","aliases":["CVE-2025-66565","GHSA-m98w-cqp3-qcqr"],"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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","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","score":9.3,"severity":null}],"references":["https://github.com/gofiber/utils/security/advisories/GHSA-m98w-cqp3-qcqr","https://github.com/gofiber/utils/commit/6c6cf047032b9c8dff43d29f990b4b10e9b02d47"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-201791","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Dec 9, 2025, 1:47:58 AM","dateUpdated":"Dec 9, 2025, 4:03:03 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-201791","identifiers":["EUVD-2025-201791","CVE-2025-66565","GHSA-m98w-cqp3-qcqr"]},"retained":false,"historicalAffected":[]}],"coverage":[]}