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CVE-2026-35338— uutils coreutils chmod Path Traversal Bypass of --preserve-root

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存在路径遍历漏洞，该漏洞源于chmod实用程序允许用户绕过--preserve-root安全机制，实现仅验证目标路径是否为字面/且未规范化路径，攻击者或意外用户可使用/../或符号链接等路径变体在整个根文件系统上执行破坏性递归操作，导致系统范围权限丢失和潜在完全系统崩溃。

CVSS 7.3 · High EPSS 0.20% · P9
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I. Basic Information for CVE-2026-35338

Vulnerability Information
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Vulnerability Title
uutils coreutils chmod Path Traversal Bypass of --preserve-root
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the chmod utility of uutils coreutils allows users to bypass the --preserve-root safety mechanism. The implementation only validates if the target path is literally / and does not canonicalize the path. An attacker or accidental user can use path variants such as /../ or symbolic links to execute destructive recursive operations (e.g., chmod -R 000) on the entire root filesystem, leading to system-wide permission loss and potential complete system breakdown.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
uutils coreutils 路径遍历漏洞
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存在路径遍历漏洞，该漏洞源于chmod实用程序允许用户绕过--preserve-root安全机制，实现仅验证目标路径是否为字面/且未规范化路径，攻击者或意外用户可使用/../或符号链接等路径变体在整个根文件系统上执行破坏性递归操作，导致系统范围权限丢失和潜在完全系统崩溃。
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 ~ 0.6.0 -

II. Public POCs for CVE-2026-35338

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III. Intelligence Information for CVE-2026-35338

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

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-2026-35365 6.6 MEDIUM uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion
CVE-2026-35350 6.6 MEDIUM uutils coreutils cp Unexpected Privileged Executable Creation with -p
CVE-2026-35374 6.3 MEDIUM uutils coreutils split Arbitrary File Truncation via Time-of-Check to Time-of-Use (TOCTOU)
CVE-2026-35355 6.3 MEDIUM uutils coreutils install Arbitrary File Overwrite via Symlink TOCTOU Race
CVE-2026-35360 6.3 MEDIUM uutils coreutils touch Arbitrary File Truncation via TOCTOU Race Condition
CVE-2026-35356 6.3 MEDIUM uutils coreutils install Arbitrary File Overwrite with -D via Path Component Symlink Race
CVE-2026-35364 6.3 MEDIUM uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition
CVE-2026-35363 5.6 MEDIUM uutils coreutils rm Safeguard Bypass via Improper Path Normalization
CVE-2026-35380 5.5 MEDIUM uutils coreutils cut Local Logic Error and Data Integrity Issue in Delimiter Parsing
CVE-2026-35348 5.5 MEDIUM uutils coreutils sort Local Denial of Service via Forced UTF-8 Parsing
CVE-2026-35369 5.5 MEDIUM uutils coreutils kill System-wide Process Termination and Denial of Service via Argument M
CVE-2026-35340 5.5 MEDIUM uutils coreutils chown and chgrp False Success Exit Code in Recursive Mode
CVE-2026-35339 5.5 MEDIUM uutils coreutils chmod False Success Exit Code in Recursive Mode
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
CVE-2026-35359 4.7 MEDIUM uutils coreutils cp Information Disclosure via Time-of-Check to Time-of-Use Symlink Swap

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

IV. Related Vulnerabilities

Same product: coreutils
Same vendor: Uutils
Same weakness: CWE-22

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