Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) Affecting gatus package, versions <5.34.0-r3


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-GATUS-15265811
  • published12 Feb 2026
  • disclosed9 Feb 2026

Introduced: 9 Feb 2026

CVE-2025-66630  (opens in a new tab)
CWE-338  (opens in a new tab)

How to fix?

Upgrade Chainguard gatus to version 5.34.0-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gatus package and not the gatus package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1