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CVE-2026-54371— attr < 2.6.0 Symlink Traversal Privilege Escalation via getfattr/setfattr

Quick assessment

Affected
attr project attr
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.

ACL ACL是ACL组织开源的一款用于实现访问控制与权限管理的安全权限控制框架。 ACL 2.6.0之前版本存在后置链接漏洞，该漏洞源于getfattr和setfattr工具中的符号链接遍历漏洞，允许本地攻击者通过替换目录层次遍历中的路径名组件为符号链接来提升权限。

CVSS 7.1 · High EPSS 0.18% · P7

Affected Version Matrix 1

VendorProduct Version RangeStatus
attr project attr < 2.6.0 affected
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I. Basic Information for CVE-2026-54371

Vulnerability Information
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Vulnerability Title
attr < 2.6.0 Symlink Traversal Privilege Escalation via getfattr/setfattr
Source: CVE Program / CVE List V5
Vulnerability Description
attr before version 2.6.0 contains a symlink traversal vulnerability in the getfattr and setfattr utilities that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link during directory hierarchy traversal. Attackers who control a pathname component can redirect getfattr and setfattr operations to arbitrary files by substituting a symlink, leading to local privilege escalation when getfattr or setfattr is invoked by a privileged process over an attacker-controlled path.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
ACL 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ACL ACL是ACL组织开源的一款用于实现访问控制与权限管理的安全权限控制框架。 ACL 2.6.0之前版本存在后置链接漏洞，该漏洞源于getfattr和setfattr工具中的符号链接遍历漏洞，允许本地攻击者通过替换目录层次遍历中的路径名组件为符号链接来提升权限。
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
attr project attr 0 ~ 2.6.0 -

II. Public POCs for CVE-2026-54371

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III. Intelligence Information for CVE-2026-54371

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Patches & Fixes for CVE-2026-54371 (1)

Other References for CVE-2026-54371 (1)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2026-54371

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