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CVE-2026-35378— uutils coreutils expr Local Denial of Service via Eager Evaluation of Parenthesized Subexpressions

Quick assessment

Affected
Uutils coreutils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

uutils coreutils是Uutils开源的一个跨平台核心命令行工具集。 uutils coreutils存在安全漏洞，该漏洞源于expr逻辑错误，在解析阶段而非执行阶段评估括号内的子表达式，导致无法对逻辑或和与操作进行正确的短路求值，可能造成脚本提前终止并破坏兼容的控制流。

CVSS 3.3 · Low EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes
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I. Basic Information for CVE-2026-35378

Vulnerability Information
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Vulnerability Title
uutils coreutils expr Local Denial of Service via Eager Evaluation of Parenthesized Subexpressions
Source: CVE Program / CVE List V5
Vulnerability Description
A logic error in the expr utility of uutils coreutils causes the program to evaluate parenthesized subexpressions during the parsing phase rather than at the execution phase. This implementation flaw prevents the utility from performing proper short-circuiting for logical OR (|) and AND (&) operations. As a result, arithmetic errors (such as division by zero) occurring within "dead" branches, branches that should be ignored due to short-circuiting, are raised as fatal errors. This divergence from GNU expr behavior can cause guarded expressions within shell scripts to fail with hard errors instead of returning expected boolean results, leading to premature script termination and breaking GNU-compatible shell control flow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的快捷方式验证
Source: CVE Program / CVE List V5
Vulnerability Title
uutils coreutils 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
uutils coreutils是Uutils开源的一个跨平台核心命令行工具集。 uutils coreutils存在安全漏洞，该漏洞源于expr逻辑错误，在解析阶段而非执行阶段评估括号内的子表达式，导致无法对逻辑或和与操作进行正确的短路求值，可能造成脚本提前终止并破坏兼容的控制流。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Uutils coreutils 0 ~ 0.8.0 -

II. Public POCs for CVE-2026-35378

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III. Intelligence Information for CVE-2026-35378

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Same Patch Batch · Uutils · 2026-04-22 · 44 CVEs total

CVE-2026-35338 7.3 HIGH uutils coreutils chmod Path Traversal Bypass of --preserve-root
CVE-2026-35368 7.2 HIGH uutils coreutils chroot Local Privilege Escalation and chroot Escape in via Name Service S
CVE-2026-35341 7.1 HIGH uutils coreutils mkfifo Unauthorized Permission Change on Existing Files
CVE-2026-35352 7.0 HIGH uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition
CVE-2026-35349 6.7 MEDIUM uutils coreutils Path-Based Safety Bypass with --preserve-root
CVE-2026-35350 6.6 MEDIUM uutils coreutils cp Unexpected Privileged Executable Creation with -p
CVE-2026-35365 6.6 MEDIUM uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion
CVE-2026-35360 6.3 MEDIUM uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition
CVE-2026-35364 6.3 MEDIUM uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition
CVE-2026-35374 6.3 MEDIUM uutils coreutils split Arbitrary File Truncation via Time-of-Check to Time-of-Use (TOCTOU)
CVE-2026-35356 6.3 MEDIUM uutils coreutils install Arbitrary File Overwrite with -D via Path Component Symlink Race
CVE-2026-35355 6.3 MEDIUM uutils coreutils install Arbitrary File Overwrite via Symlink TOCTOU Race
CVE-2026-35363 5.6 MEDIUM uutils coreutils rm Safeguard Bypass via Improper Path Normalization
CVE-2026-35369 5.5 MEDIUM uutils coreutils kill System-wide Process Termination and Denial of Service via Argument M
CVE-2026-35339 5.5 MEDIUM uutils coreutils chmod False Success Exit Code in Recursive Mode
CVE-2026-35340 5.5 MEDIUM uutils coreutils chown and chgrp False Success Exit Code in Recursive Mode
CVE-2026-35348 5.5 MEDIUM uutils coreutils sort Local Denial of Service via Forced UTF-8 Parsing
CVE-2026-35380 5.5 MEDIUM uutils coreutils cut Local Logic Error and Data Integrity Issue in Delimiter Parsing
CVE-2026-35345 5.3 MEDIUM uutils coreutils tail Privileged Information Disclosure via Symlink Replacement Race
CVE-2026-35372 5.0 MEDIUM uutils coreutils ln Security Bypass via Improper Handling of the --no-dereference Flag

Showing top 20 of 44 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: coreutils
Same vendor: Uutils

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