Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-54369— acl < 2.4.0 Symlink Traversal Privilege Escalation via libacl Functions

Quick assessment

Affected
acl project acl
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 2.4.0之前版本存在后置链接漏洞，该漏洞源于libacl路径名相关函数（如acl_get_file()、acl_set_file()、acl_extended_file()和acl_delete_def_file()）中存在符号链接遍历漏洞，允许本地攻击者通过将任何路径名组件替换为符号链接来提升权限，导致未授权操作访问控制列表并实现本地权限提升。

CVSS 7.1 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
acl project acl < 2.4.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-54369

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
acl < 2.4.0 Symlink Traversal Privilege Escalation via libacl Functions
Source: CVE Program / CVE List V5
Vulnerability Description
acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.
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 2.4.0之前版本存在后置链接漏洞，该漏洞源于libacl路径名相关函数（如acl_get_file()、acl_set_file()、acl_extended_file()和acl_delete_def_file()）中存在符号链接遍历漏洞，允许本地攻击者通过将任何路径名组件替换为符号链接来提升权限，导致未授权操作访问控制列表并实现本地权限提升。
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
acl project acl 0 ~ 2.4.0 -

II. Public POCs for CVE-2026-54369

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-54369

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-54369 (2)

Vendor Advisories for CVE-2026-54369 (1)

IV. Related Vulnerabilities

Same product: acl
Same vendor: acl project
Same weakness: CWE-59

V. Comments for CVE-2026-54369

No comments yet

Leave a comment