CVE-2026-35346

Name: CVE-2026-35346
Creator: NVD / NIST
Published: 2026-04-22T17:16:36.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2026-35346 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.

Metrics

CVSS 3.1

3.3/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.18%

7.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-176

Affected Software

Vendor	Product	Versions
Uutils	Coreutils	< 0.6.0

References

https://github.com/uutils/coreutils/issues/10192Exploit, Issue Tracking, Vendor Advisory
https://github.com/uutils/coreutils/pull/10206Issue Tracking, Patch
https://github.com/uutils/coreutils/releases/tag/0.6.0Release Notes
https://github.com/uutils/coreutils/issues/10192Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-35346?

How severe is CVE-2026-35346?

CVE-2026-35346 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-35346?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-35346?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST