acl up to 2.5.x Pathname link following

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k1.30

Summaryinfo

A vulnerability classified as critical was found in acl up to 2.5.x. Affected is an unknown function of the component Pathname. Executing a manipulation can lead to link following. This vulnerability is handled as CVE-2026-54371. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in acl up to 2.5.x. This vulnerability affects an unknown function of the component Pathname. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by Andrew Tridgell. The advisory is available at cgit.git.savannah.nongnu.org. This vulnerability was named CVE-2026-54371 since 06/12/2026. The exploitation appears to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

Upgrading to version 2.6.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.git.savannah.nongnu.org. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.1
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: acl 2.6.0
Patch: cgit.git.savannah.nongnu.org

Timelineinfo

06/12/2026 CVE reserved
06/29/2026 +17 days Advisory disclosed
06/29/2026 +0 days VulDB entry created
06/29/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cgit.git.savannah.nongnu.org
Researcher: Andrew Tridgell
Status: Confirmed

CVE: CVE-2026-54371 (🔒)
GCVE (CVE): GCVE-0-2026-54371
GCVE (VulDB): GCVE-100-374626

Entryinfo

Created: 06/29/2026 16:38
Changes: 06/29/2026 16:38 (77)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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