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.
Metrics
Affected Vendors & Products
References
History
Thu, 11 Dec 2025 16:45:00 +0000
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| CPEs | cpe:2.3:a:gofiber:utils:*:*:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta10:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta11:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta12:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta13:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta14:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta1:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta2:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta3:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta4:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta5:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta6:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta7:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta8:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:beta9:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:rc1:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:rc2:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:rc3:*:*:*:go:*:* cpe:2.3:a:gofiber:utils:2.0.0:rc4:*:*:*:go:*:* |
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| Metrics |
cvssV3_1
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Tue, 09 Dec 2025 16:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Tue, 09 Dec 2025 10:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Gofiber
Gofiber utils |
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| Vendors & Products |
Gofiber
Gofiber utils |
Tue, 09 Dec 2025 02:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values | |
| Weaknesses | CWE-252 CWE-331 CWE-338 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-12-09T01:47:58.430Z
Updated: 2025-12-09T16:03:03.356Z
Reserved: 2025-12-04T16:05:22.975Z
Link: CVE-2025-66565
Updated: 2025-12-09T14:17:01.343Z
Status : Analyzed
Published: 2025-12-09T16:18:21.097
Modified: 2025-12-11T16:35:06.997
Link: CVE-2025-66565
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