Joomla CMS up to 5.4.5/6.1.0 path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Joomla CMS up to 5.4.5/6.1.0. This impacts an unknown function. This manipulation causes path traversal. This vulnerability is tracked as CVE-2026-40383. The attack is restricted to local execution. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Joomla CMS up to 5.4.5/6.1.0 and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An improper validation of user-supplied input leads to a local file inclusion vulnerability.

The advisory is shared at developer.joomla.org. This vulnerability is known as CVE-2026-40383 since 04/12/2026. The exploitation appears to be easy. An attack has to be approached locally. Additional levels of successful authentication are required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 5.4.6 or 6.1.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-5389) and CERT Bund (WID-SEC-2026-1688). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source Joomla

Productinfo

Type

Vendor

Name

Version

License

Website

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: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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: CMS 5.4.6/6.1.1

Timelineinfo

04/12/2026 CVE reserved
05/26/2026 +44 days Advisory disclosed
05/26/2026 +0 days VulDB entry created
05/27/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: joomla.org

Advisory: developer.joomla.org
Status: Confirmed

CVE: CVE-2026-40383 (🔒)
GCVE (CVE): GCVE-0-2026-40383
GCVE (VulDB): GCVE-100-365737
CERT Bund: WID-SEC-2026-1688 - Joomla: Mehrere Schwachstellen
CNNVD: CNNVD-202605-5389 - Joomla! CMS 路径遍历漏洞

Entryinfo

Created: 05/26/2026 19:52
Updated: 05/27/2026 22:58
Changes: 05/26/2026 19:52 (67), 05/27/2026 21:35 (7), 05/27/2026 22:58 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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