CVE-2026-35366
The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences.
Published Apr 22, 2026 · updated Jun 17, 2026 · uutils coreutils
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.
Code
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Timeline
Detection, updates, and resolution for this record.
Apr 22, 2026 · NIST NVD
Detected
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 administr
Jun 17, 2026 · NIST NVD
Updated
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 administr
Affected
- cpe uutils/coreutilsversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-35366
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-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 vul
nvd.nist.gov