acl: Symlink traversal privilege escalation via libacl functions

A flaw was found in the acl package, specifically within its libacl pathname-based functions. A local attacker could exploit this vulnerability by using a symbolic link to replace a pathname component. This could allow the attacker to redirect access control list ACL read or write operations to...

CVE-2026-53905

CVE-2026-53905 affects MCO, with confirmation in version 25.3.3.1. The issue is an insufficient authorization enforcement in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint, allowing an authenticated, low-privileged user to retrieve administrator access contr...

EUVD-2026-40951

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive...

CVE-2026-53905 Unauthorized Access to Administrator ACL View in MCO

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive...

CVE-2026-53905

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive...

CVE-2026-54369 affecting package acl for versions less than 2.4.0-1

CVE-2026-54369 affecting package acl for versions less than 2.4.0-1. A patched version of the package is available...

CVE-2026-54371 affecting package acl for versions less than 2.4.0-1

CVE-2026-54371 affecting package acl for versions less than 2.4.0-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-54370 affecting package acl for versions less than 2.4.0-1

CVE-2026-54370 affecting package acl for versions less than 2.4.0-1. A patched version of the package is available...

CVE-2026-53905: Incorrect Authorization

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive...

SUSE CVE-2026-54370

acl before version 2.4.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat check and subsequent symlink-following operations such as stat, chown,...

Linux Distros Unpatched Vulnerability : CVE-2026-54370

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - acl before version 2.4.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability that allows local attackers to escalate privileges by...

Linux Distros Unpatched Vulnerability : CVE-2026-54369

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions aclgetfile, aclsetfile, aclextendedfile, and...

AZL-91397 CVE-2026-54369 affecting package acl for versions less than 2.4.0-1

acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions aclgetfile, aclsetfile, aclextendedfile, and acldeletedeffile that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who contr...

AZL-91400 CVE-2026-54371 affecting package acl for versions less than 2.4.0-1

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 ca...

AZL-91394 CVE-2026-54370 affecting package acl for versions less than 2.4.0-1

acl before version 2.4.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat check and subsequent symlink-following operations such as stat, chown,...

UBUNTU-CVE-2026-54369

acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions aclgetfile, aclsetfile, aclextendedfile, and acldeletedeffile that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who contr...

CVE-2026-54370

acl before version 2.4.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat check and subsequent symlink-following operations such as stat, chown,...

Symlink Attack

Overview acl is a None Affected versions of this package are vulnerable to Symlink Attack. via the libacl functions. An attacker can gain unauthorized access to or modify access control lists by replacing a pathname component with a symbolic link, redirecting ACL read or write operations to...

EUVD-2026-40086

acl before version 2.4.0 contains a time-of-check to time-of-use TOCTOU race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat check and subsequent symlink-following operations such as stat, chown,...

CVE-2026-54370

CVE-2026-54370 affects acl before version 2.4.0, introducing a TOCTOU race where an attacker-controlled pathname component can replace a component with a symlink between an lstat() check and subsequent operations (stat, chown, chmod, acl_get_file, acl_set_file). This enables local privilege escal...