Joomla CMS up to 5.4.5/6.1.0 com_content cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Joomla CMS up to 5.4.5/6.1.0. The impacted element is an unknown function of the component com_content. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-30895. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Joomla CMS up to 5.4.5/6.1.0. This issue affects some unknown processing of the component com_content. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Lack of output escaping leads to a XSS vector in the readmore links for com_content.

The weakness was published by peterhulst. It is possible to read the advisory at developer.joomla.org. The identification of this vulnerability is CVE-2026-30895 since 03/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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). Be aware that VulDB is the high quality source for 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: 2.4
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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

03/06/2026 CVE reserved
05/26/2026 +80 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
Researcher: peterhulst
Status: Confirmed

CVE: CVE-2026-30895 (🔒)
GCVE (CVE): GCVE-0-2026-30895
GCVE (VulDB): GCVE-100-365735
CERT Bund: WID-SEC-2026-1688 - Joomla: Mehrere Schwachstellen

Entryinfo

Created: 05/26/2026 19:50
Updated: 05/27/2026 20:59
Changes: 05/26/2026 19:50 (68), 05/26/2026 19:51 (1), 05/27/2026 20:59 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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