Joomla CMS up to 5.4.3/6.0.3 Autoupdate file inclusion

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7$5k-$25k0.11

Summaryinfo

A vulnerability classified as problematic was found in Joomla CMS up to 5.4.3/6.0.3. Impacted is an unknown function of the component Autoupdate. Executing a manipulation can lead to file inclusion. The identification of this vulnerability is CVE-2026-23898. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Joomla CMS up to 5.4.3/6.0.3. It has been declared as problematic. This vulnerability affects an unknown function of the component Autoupdate. The manipulation with an unknown input leads to a file inclusion vulnerability. The CWE definition for the vulnerability is CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Lack of input validation leads to an arbitrary file deletion vulnerability in the autoupdate server mechanism.

The weakness was shared by Phil Taylor. The advisory is available at developer.joomla.org. This vulnerability was named CVE-2026-23898 since 01/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/01/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

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Version

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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: 4.7
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.7
VulDB Temp Score: 4.7
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: File inclusion
CWE: CWE-73
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/17/2026 CVE reserved
04/01/2026 +73 days Advisory disclosed
04/01/2026 +0 days VulDB entry created
04/01/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: joomla.org

Advisory: developer.joomla.org
Researcher: Phil Taylor
Status: Confirmed

CVE: CVE-2026-23898 (🔒)
GCVE (CVE): GCVE-0-2026-23898
GCVE (VulDB): GCVE-100-354634

Entryinfo

Created: 04/01/2026 13:49
Changes: 04/01/2026 13:49 (66)
Complete: 🔍
Cache ID: 216:38D:103

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

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