Improper Verification of Cryptographic Signature Affecting step-issuer-fips package, versions <0.9.11-r5


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-STEPISSUERFIPS-15339206
  • published25 Feb 2026
  • disclosed6 Feb 2026

Introduced: 6 Feb 2026

CVE-2026-25793  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade Chainguard step-issuer-fips to version 0.9.11-r5 or higher.

NVD Description

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

Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates (which is not the default configuration), it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of the certificate with a different fingerprint. This issue has been patched in version 1.10.3.

CVSS Base Scores

version 3.1