Improper Check for Certificate Revocation Affecting rustup package, versions <1.29.1~0-160000.1.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.2% (9th percentile)

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  • Snyk IDSNYK-SLES1600-RUSTUP-20570843
  • published8 Oct 2026
  • disclosed2 Oct 2026

Introduced: 2 Oct 2026

NewCVE-2026-93602  (opens in a new tab)
CWE-299  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 rustup to version 1.29.1~0-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rustup package and not the rustup package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

rustls-webpki versions before 0.103.10 and 0.104.0-alpha.5 contain faulty CRL authority-matching logic that compares only the first distributionPoint against each CRL's IssuingDistributionPoint, ignoring additional distributionPoints. Attackers with a compromised trusted issuing authority can present revoked certificates that pass revocation checks under UnknownStatusPolicy::Allow, or cause incorrect errors under the default deny policy.

CVSS Base Scores

version 3.1