CVE-2025-63083Network attack vector

Browser script execution via unescaped pagination output

Published Jan 6, 2026 · Updated Jan 6, 2026

Cross-site scripting in Joomla! CMS 3.9.0 through 5.4.1 and 6.0.0 through 6.0.1 allows remote authenticated users to execute browser scripts. The pagebreak and pagenavigation plugins render pagination output without HTML escaping, so crafted content is interpreted as markup. Joomla's assessment requires high privileges and passive user interaction; exploitation alters displayed content and exposes browser-accessible data.

CVSS severity6.1
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Joomla! CMS 3.9.0 through 5.4.1 and 6.0.0 through 6.0.1 allows remote authenticated users to execute browser scripts. The pagebreak and pagenavigation plugins render pagination output without HTML escaping, so crafted content is interpreted as markup. Joomla's assessment requires high privileges and passive user interaction; exploitation alters displayed content and exposes browser-accessible data.

The record

CVE
CVE-2025-63083
Published
Jan 6, 2026
Updated
Jan 6, 2026
Vendor
Joomla! Project
Product
Joomla! CMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.9.0-5.4.1
  2. Affected versionversion=6.0.0-6.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Joomla! Project · Joomla! CMSversion=3.9.0-5.4.1; version=6.0.0-6.0.1

Published CVSS scores

5.9Joomla! ProjectCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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