CVE-2026-35366
uutils coreutils printenv Security Inspection Bypass via UTF-8 Enforcement
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences. While POSIX permits arbitrary bytes in environment strings, the uutils implementation silently skips these entries rather than printing the raw bytes. This vulnerability allows malicious environment variables (e.g., adversarial LD_PRELOAD values) to evade inspection by administrators or security auditing tools, potentially allowing library injection or other environment-based attacks to go undetected.
| CWE | CWE-754 |
| Vendor | uutils |
| Product | coreutils |
| Published | Apr 22, 2026 |
| Last Updated | Apr 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Uutils / coreutils
0 < 0.6.0
References
Credits
Zellic