CVE-2026-35366 — uutils coreutils printenv Security Inspection Bypass via UTF-8 Enforcement
The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences. While POSIX permits arbitrary bytes in environment strin…
Published: 2026-04-22 · CVSS: 4.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7