CVE•Published 2026-04-22•Modified 2026-04-27•0 articles on news•6 live references•NVD data

CVE-2026-35346Uutils · Coreutils

Vulnerability data via NVD (ingested)

CVSS v3.1

3.3

LOW

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

EPSS percentile

Exploit Prediction Scoring System · top 99% of all CVEs

Weaknesses (CWE)

CWE-176Improper Handling of Unicode Encoding

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.

Timeline

Published 2026-04-22

Modified 2026-04-27

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-35346

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Uutils Coreutils"

All exposed Uutils Coreutils instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Coreutils"

HTTP body or banner mentions "Coreutils" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-35346