CVE-2026-35366

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 34/100
Published: 2026-04-22 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
uutils coreutils < 0.6.0

Bug Bounty Relevance

34 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

4.4 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.17%
Raw Score 0.001700
Percentile 6.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00170
2026-10-28
0.00170

Intelligence Sources

nvd ref →