Improper Input Validation Affecting rustup package, versions <1.28.2~0-150600.10.13.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.21% (12th percentile)

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  • Snyk IDSNYK-SLES157-RUSTUP-17949210
  • published11 Jul 2026
  • disclosed9 Jul 2026

Introduced: 9 Jul 2026

NewCVE-2026-42327  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 rustup to version 1.28.2~0-150600.10.13.1 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:15.7 relevant fixed versions and status.

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.7 to before 0.10.79, X509Ref::ocsp_responders returns OCSP responder URLs from a certificate's AIA extension as OpensslString, whose Deref<Target = str> wraps the raw bytes with str::from_utf8_unchecked. OpenSSL does not enforce that the underlying IA5String is ASCII, so a certificate with non-UTF-8 bytes in its OCSP accessLocation causes safe Rust code to construct a &str that violates the UTF-8 invariant — resulting in undefined behavior. This vulnerability is fixed in 0.10.79.

CVSS Base Scores

version 3.1