Joomla CMS up to 5.4.5/6.1.0 Scheduler Task access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Joomla CMS up to 5.4.5/6.1.0. This affects an unknown part of the component Scheduler Task Handler. The manipulation results in access control. This vulnerability is known as CVE-2026-48900. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Joomla CMS up to 5.4.5/6.1.0. It has been classified as critical. Affected is an unknown functionality of the component Scheduler Task Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An improper access check allowed low privileged users to edit the task types of existing scheduler tasks.

The advisory is available at developer.joomla.org. This vulnerability is traded as CVE-2026-48900 since 05/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/27/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 5.4.6 or 6.1.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1688). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
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: Access control
CWE: CWE-284 / CWE-266
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: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CMS 5.4.6/6.1.1

Timelineinfo

05/26/2026 Advisory disclosed
05/26/2026 +0 days CVE reserved
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-2026-48900 (🔒)
GCVE (CVE): GCVE-0-2026-48900
GCVE (VulDB): GCVE-100-365730
CERT Bund: WID-SEC-2026-1688 - Joomla: Mehrere Schwachstellen

Entryinfo

Created: 05/26/2026 19:50
Updated: 05/27/2026 21:46
Changes: 05/26/2026 19:50 (67), 05/26/2026 19:51 (1), 05/27/2026 21:46 (7)
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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