# CVE-2026-35346

## Summary

- **CVE ID:** CVE-2026-35346
- **Severity:** LOW
- **CVSS Score:** 3.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
- **CWE:** CWE-176
- **Published:** Apr 22, 2026
- **Last Modified:** Apr 22, 2026

## 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.

## Affected Products

- Uutils — coreutils (0)

## References

- [CNA](https://github.com/uutils/coreutils/pull/10206)
- [CNA](https://github.com/uutils/coreutils/issues/10192)
- [CNA](https://github.com/uutils/coreutils/releases/tag/0.6.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._