CVE-2026-35379: A logic error in the tr utility of uutils coreutils causes the program to incorrectly define the [:graph:] and [:print:] character classes.

CVE-2026-35379 · Severity: low · CVSS 3.3 · Published 2026-04-22

A logic error in the tr utility of uutils coreutils causes the program to incorrectly define the [:graph:] and [:print:] character classes. The implementation mistakenly includes the ASCII space character (0x20) in the [:graph:] class and excludes it from the [:print:] class, effectively reversing the standard behavior established by POSIX and GNU coreutils. This vulnerability leads to unintended data modification or loss when the utility is used in automated scripts or data-cleaning pipelines that rely on standard character class semantics. For example, a command executed to delete all graphical characters while intending to preserve whitespace will incorrectly delete all ASCII spaces, potentially resulting in data corruption or logic failures in downstream processing.

Technologies: coreutils (crates.io), Uutils Coreutils. Vendors: crates.io, Uutils.

Quick answers

Is CVE-2026-35379 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35379 being exploited in the wild.
How severe is CVE-2026-35379?
Low severity, with a CVSS score of 3.3, published 22 April 2026.
Which products and versions are affected?
coreutils (crates.io) SEMVER:introduced=0,fixed=0.8.0.
Is there a fix for CVE-2026-35379?
Yes. coreutils (crates.io): upgrade to 0.8.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-35379?
Check whether you run coreutils (crates.io) or Uutils Coreutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • coreutils (crates.io): upgrade to 0.8.0 or later
    cargo update -p coreutils

Affected products

  • coreutils (crates.io) SEMVER:introduced=0,fixed=0.8.0
  • Uutils Coreutils

Identifiers

  • CVE-2026-35379
  • GHSA-fhr3-xh3q-69w6

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