Joomla CMS up to 5.4.1/6.0.1 Pagebreak Plugin cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Joomla CMS up to 5.4.1/6.0.1. The impacted element is an unknown function of the component Pagebreak Plugin. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2025-63083. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Joomla CMS up to 5.4.1/6.0.1. This affects an unknown functionality of the component Pagebreak Plugin. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

Lack of output escaping leads to a XSS vector in the pagebreak plugin.

The weakness was presented by peterhulst. The advisory is shared at developer.joomla.org. This vulnerability is uniquely identified as CVE-2025-63083 since 10/26/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/31/2026). MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 281853 (Joomla 3.9.x < 5.4.2 / 6.0.x < 6.0.2 Joomla 6.0.2 & 5.4.2 Security & Bugfix Release (5942-joomla-6-0-2-and-5-4-2-security-bugfix-release)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the databases at Tenable (281853) and EUVD (EUVD-2026-1006). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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: 4.2

VulDB Base Score: 2.4
VulDB Temp Score: 2.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

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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Nessus ID: 281853
Nessus Name: Joomla 3.9.x < 5.4.2 / 6.0.x < 6.0.2 Joomla 6.0.2 & 5.4.2 Security & Bugfix Release (5942-joomla-6-0-2-and-5-4-2-security-bugfix-release)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/26/2025 CVE reserved
01/06/2026 +72 days Advisory disclosed
01/06/2026 +0 days VulDB entry created
01/31/2026 +24 days VulDB entry last update

Sourcesinfo

Vendor: joomla.org

Advisory: developer.joomla.org
Researcher: peterhulst
Status: Confirmed

CVE: CVE-2025-63083 (🔒)
GCVE (CVE): GCVE-0-2025-63083
GCVE (VulDB): GCVE-100-339753
EUVD: 🔒

Entryinfo

Created: 01/06/2026 18:06
Updated: 01/31/2026 00:28
Changes: 01/06/2026 18:06 (68), 01/07/2026 00:48 (1), 01/07/2026 06:20 (2), 01/30/2026 21:49 (11), 01/31/2026 00:28 (1)
Complete: 🔍
Cache ID: 216::103

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

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