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. 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.

• CWE-684

• https://github.com/uutils/coreutils/pull/11405Exploit, Issue Tracking, Patch
• https://github.com/uutils/coreutils/releases/tag/0.8.0Release Notes

Published

Apr 22, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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