CVE-2026-35346 (GCVE-0-2026-35346)
Vulnerability from cvelistv5 – Published: 2026-04-22 16:07 – Updated: 2026-04-22 18:12
VLAI
EPSS
VEX
Title
uutils coreutils comm Silent Data Corruption via Lossy UTF-8 Normalization
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 18:12 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/uutils/coreutils/pull/10206 | patch |
| https://github.com/uutils/coreutils/issues/10192 | issue-tracking |
| https://github.com/uutils/coreutils/releases/tag/0.6.0 | vendor-advisory |
Impacted products
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