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 the Fiber v2 UUID functions, application code may unknowingly rely on predictable, repeated, or low-entropy identifiers in security-critical pathways. This is especially impactful because many Fiber v2 middleware components (session middleware, CSRF, rate limiting, request-ID generation, etc.) default to using utils.UUIDv4(). This vulnerability is fixed in 2.52.11.

• CWE-338

• https://github.com/gofiber/fiber/commit/eb874b6f6c5896b968d9b0ab2b56ac7052cb0ee1Patch
• https://github.com/gofiber/fiber/releases/tag/v2.52.11Product, Release Notes
• https://github.com/gofiber/fiber/security/advisories/GHSA-68rr-p4fp-j59vVendor Advisory

Published

Feb 9, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-66625Umbraco is an ASP.NET CMS. Due to unsafe handling and deleti…4.9
• CVE-2025-66626Argo Workflows is an open source container-native workflow e…7.5
• CVE-2025-66627Wasmi is a WebAssembly interpreter focused on constrained an…7.8
• CVE-2025-66628ImageMagick is a software suite to create, edit, compose, or…7.5
• CVE-2025-66629HedgeDoc is an open source, real-time, collaborative, markdo…4.3
• CVE-2025-6663GStreamer H266 Codec Parsing Stack-based Buffer Overflow Rem…7.8
• CVE-2025-66631CSLA .NET is a framework designed for the development of reu…9.8
• CVE-2025-66633An out-of-bounds read vulnerability exists in the EMF functi…7.1
• CVE-2025-66635Stack-based buffer overflow vulnerability exists in SEIKO EP…8.6
• CVE-2025-6664A vulnerability, which was classified as problematic, was fo…4.3
• CVE-2025-66644Array Networks ArrayOS AG before 9.4.5.9 allows command inje…9.8
• CVE-2025-66645NiceGUI is a Python-based UI framework. Versions 3.3.1 and b…7.5