CVE-2026-54369
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
A vulnerability in the ACL library before version 2.4.0 allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. The libacl pathname-based functions are vulnerable to symlink traversal attacks.
Risk Assessment
The organization risks that a local attacker gains unauthorized access to files or directories by manipulating ACLs and escalating privileges.
Recommendation
Update the ACL library to version 2.4.0 or later, which contains the security fix.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

