CVE-2026-35366

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.

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/uutils/coreutils/issues/9701	Exploit Issue Tracking
https://github.com/uutils/coreutils/pull/9728	Issue Tracking Patch
https://github.com/uutils/coreutils/releases/tag/0.6.0	Release Notes
https://github.com/uutils/coreutils/issues/9701	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

History

No history.

Information

Published : 2026-04-22 17:16

Updated : 2026-06-17 10:40

NVD link : CVE-2026-35366

Mitre link : CVE-2026-35366

CVE.ORG link : CVE-2026-35366

JSON object : View

Products Affected

uutils

coreutils

CWE

CWE-754

Improper Check for Unusual or Exceptional Conditions

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