Uutils coreutils up to 0.7.x tr Utility character incorrect provision of specified functionality

Summaryinfo

A vulnerability was found in Uutils coreutils up to 0.7.x and classified as problematic. The impacted element is the function character of the component tr Utility. The manipulation results in incorrect provision of specified functionality. This vulnerability is reported as CVE-2026-35379. The attack requires a local approach. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Uutils coreutils up to 0.7.x. Affected is the function character of the component tr Utility. The manipulation with an unknown input leads to a incorrect provision of specified functionality vulnerability. CWE is classifying the issue as CWE-684. The code does not function according to its published specifications, potentially leading to incorrect usage. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed by Zellic. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-35379 since 04/02/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

Upgrading to version 0.8.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25034). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Uutils

Name

• coreutils

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7

Website

• Product: https://github.com/uutils/coreutils/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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