CVE-2026-35346: Uutils coreutils · Improper Handling of Unicode Encoding
Affects Uutils coreutilsSource CVE Database V5
Not known to be exploited · CVSS 3.3 Low : upgrade to 0.6.0 when convenient.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.6.0
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade Uutils coreutils to 0.6.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Uutilscoreutils | Affected
| Fixed in
|
GitHubuutils/coreutilspkg:github/uutils/coreutilsOther threats | Affected
| Fixed in– |
GitHubcoreutilspkg:github/coreutilsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, users should avoid using uutils coreutils comm utility for comparing binary or non-UTF-8 encoded files or use GNU comm as an alternative.
Description
The comm utility in uutils coreutils improperly handles Unicode encoding by performing lossy UTF-8 conversion on all output lines. This causes silent data corruption when comparing binary files or files with non-UTF-8 encodings, as invalid UTF-8 sequences are replaced with the Unicode replacement character. This behavior differs from GNU comm, which preserves raw byte data. The vulnerability has a low severity score and no known exploits in the wild.