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TI-2025-39229 Aliases CVE-2025-63082GHSA-w359-ppwg-hrqh

Joomla! Core - [20260101] - Inadequate content filtering for data URLs

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Lack of input filtering leads to an XSS vector in the HTML filter code related to data URLs in img tags.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Joomla!Joomla! CMS4.0.0-5.4.1; 6.0.0-6.0.1—No fix listedCNA
  • Joomla! CMS VendorJoomla! Affected 4.0.0-5.4.1; 6.0.0-6.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*4.0.0 to before 5.4.2; 6.0.0 to before 6.0.2VulnerableJoomla!
  • cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:* Versions 4.0.0 to before 5.4.2; 6.0.0 to before 6.0.2 Vulnerable ·Joomla!

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-63082
  2. 2026-10-03 Alias added: GHSA-w359-ppwg-hrqh

References

Advisory 1

  • TI-2016-08118 The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-06410 SQL injection vulnerability in Joomla! 3.7.x before 3.7.1 allows attackers to execute… CVSS 3.0CRITICAL 9.8
  • TI-2016-08129 The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass… CVSS 3.1CRITICAL 9.8
  • TI-2016-07280 The register method in the UsersModelRegistration class in controllers/user.php in the… CVSS 3.0CRITICAL 9.8
  • TI-2023-09555 [20230201] - Core - Improper access check in webservice endpoints KEVCVSS 3.1MEDIUM 5.3
  • TI-2015-07045 Joomla! 1.5.x, 2.x, and 3.x before 3.4.6 allow remote attackers to conduct PHP object… CVSS 2.0HIGH 7.5
See all 339 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences