CVE-2025-66565
- Source
- https://cve.org/CVERecord?id=CVE-2025-66565
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66565.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-66565
- Aliases
- Downstream
- Related
- Published
- 2025-12-09T01:47:58.430Z
- Modified
- 2026-03-23T05:04:39.290757999Z
- Severity
-
- 9.3 (Critical) CVSS_V4 - 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 CVSS Calculator
- Summary
- Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values
- Details
-
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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66565.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-252", "CWE-331", "CWE-338" ] }- References
Affected packages
Git / github.com/gofiber/utils
Affected ranges
- Type
- GIT
- Repo
- https://github.com/gofiber/utils
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
v0.*
v0.0.1
v0.0.10
v0.0.2
v0.0.3
v0.0.4
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v0.1
v0.1.0
v0.1.1
v0.1.2
v1.*
v1.0.0
v1.0.0-beta.1
v1.0.0-beta.2
v1.0.1
v2.*
v2.0.0-beta.1
v2.0.0-beta.10
v2.0.0-beta.11
v2.0.0-beta.12
v2.0.0-beta.13
v2.0.0-beta.14
v2.0.0-beta.2
v2.0.0-beta.3
v2.0.0-beta.4
v2.0.0-beta.5
v2.0.0-beta.6
v2.0.0-beta.7
v2.0.0-beta.8
v2.0.0-beta.9
v2.0.0-rc.1
v2.0.0-rc.2
v2.0.0-rc.3