PT-2026-34482 · Unknown · Uutils Coreutils

Zellic · Published 2026-04-22 · Updated 2026-04-27 · CVE-2026-35346

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions uutils coreutils (affected versions not specified)

Description The comm utility silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation utilizes the String::from utf8 lossy() function, which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior leads to corrupted output when comparing binary files or files that use non-UTF-8 legacy encodings, as it does not preserve original raw bytes.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-176

Related Identifiers

CVE-2026-35346

GHSA-HWHF-8P2F-45WR

Affected Products

Uutils Coreutils

References · 14

• 🔥 https://github.com/uutils/coreutils/issues/10192 · Exploit
• https://github.com/uutils/coreutils/pull/10206 · Patch
• https://github.com/uutils/coreutils/releases/tag/0.6.0 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-35346 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-35346 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-35346 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-hwhf-8p2f-45wr · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-35346 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-35346 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-35346 · Vendor Advisory
• https://github.com/uutils/coreutils/commit/b9372e509ea9b278fe13763237067a261bb8c946 · Note
• https://github.com/uutils/coreutils · Note
• https://twitter.com/CVEnew/status/2047012109461119142 · Twitter Post
• https://t.me/cveNotify/161064 · Telegram Post