CVE-2025-66630
- Source
- https://cve.org/CVERecord?id=CVE-2025-66630
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66630.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-66630
- Aliases
- Downstream
- Related
- Published
- 2026-02-09T18:04:47.713Z
- Modified
- 2026-03-04T22:29:05.049958Z
- Severity
-
- 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Fiber insecurely fallsback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-338" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66630.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66630.json
- https://github.com/gofiber/fiber/commit/eb874b6f6c5896b968d9b0ab2b56ac7052cb0ee1
- https://github.com/gofiber/fiber/releases/tag/v2.52.11
- https://github.com/gofiber/fiber/security/advisories/GHSA-68rr-p4fp-j59v
- https://nvd.nist.gov/vuln/detail/CVE-2025-66630
Affected packages
Git / github.com/gofiber/fiber
Affected ranges
- Type
- GIT
- Repo
- https://github.com/gofiber/fiber
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
v1.*
v1.0.0
v1.10.0
v1.10.5
v1.11.0
v1.11.1
v1.12.0
v1.12.1
v1.12.2
v1.12.3
v1.12.4
v1.12.5
v1.12.6
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.14.1
v1.14.2
v1.14.3
v1.14.4
v1.14.5
v1.14.6
v1.7.1
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.8.41
v1.8.42
v1.8.43
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.6
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.10.0
v2.11.0
v2.12.0
v2.13.0
v2.14.0
v2.15.0
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.20.0
v2.20.1
v2.20.2
v2.21.0
v2.22.0
v2.23.0
v2.24.0
v2.25.0
v2.26.0
v2.27.0
v2.28.0
v2.29.0
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.30.0
v2.31.0
v2.32.0
v2.33.0
v2.34.0
v2.34.0-rc.1
v2.34.1
v2.35.0
v2.36.0
v2.37.0
v2.37.0-rc.1
v2.37.1
v2.38.0
v2.38.1
v2.39.0
v2.4.0
v2.4.1
v2.40.0
v2.40.1
v2.41.0
v2.42.0
v2.43.0
v2.44.0
v2.45.0
v2.46.0
v2.47.0
v2.48.0
v2.49.0
v2.49.1
v2.49.2
v2.5.0
v2.50.0
v2.51.0
v2.52.0
v2.52.1
v2.52.10
v2.52.2
v2.52.3
v2.52.4
v2.52.5
v2.52.6
v2.52.7
v2.52.8
v2.52.9
v2.6.0
v2.7.0
v2.7.1
v2.8.0
v2.9.0