Fiber has an insecure fallback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure

Fiber v2 contains an internal vendored copy of gofiber/utils, and its functions UUIDv4 and UUID inherit the same critical weakness described in the upstream advisory. On Go versions prior to 1.24, the underlying crypto/rand implementation can return an error if secure randomness cannot be obtaine...

PT-2026-7122

Name of the Vulnerable Software and Affected Versions Fiber versions prior to 2.52.11 Fiber versions prior to 2.52.11 running on Go versions prior to 1.24 Description The Fiber framework, an Express-inspired web framework written in Go, is susceptible to generating predictable identifiers when...

SUSE CVE-2025-66565

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...

CVE-2025-66565 Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values

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...

PT-2025-49761

Name of the Vulnerable Software and Affected Versions Fiber Utils versions 2.0.0-rc.3 and below Description Fiber Utils is a collection of functions for Fiber. In versions 2.0.0-rc.3 and below, if the system’s cryptographic random number generator crypto/rand fails, the software silently reverts ...

Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values

Summary Critical security vulnerabilities exist in both the UUIDv4 and UUID functions of the github.com/gofiber/utils package. When the system's cryptographic random number generator crypto/rand fails, both functions silently fall back to returning predictable UUID values, the zero UUID...