A Joomla user with K2 "create item" rights (Author tier by default) can submit an article whose `embedVideo` POST field contains a raw `<script>` tag; K2 stores it verbatim and renders it unescaped to any visitor of the article page.

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Fixes

Solution

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Workaround

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References
Link Providers
https://www.getk2.org/ cve-icon
History

Thu, 25 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 25 Jun 2026 15:45:00 +0000

Type Values Removed Values Added
Description A Joomla user with K2 "create item" rights (Author tier by default) can submit an article whose `embedVideo` POST field contains a raw `<script>` tag; K2 stores it verbatim and renders it unescaped to any visitor of the article page.
Title Joomla Extension - getk2.com - Stored-XSS in K2 extension for Joomla < 2.26
Weaknesses CWE-79
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Joomla

Published:

Updated: 2026-06-25T18:47:31.383Z

Reserved: 2026-05-26T16:47:13.550Z

Link: CVE-2026-48940

cve-icon Vulnrichment

Updated: 2026-06-25T18:47:01.438Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T21:00:13Z

Weaknesses