Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.26

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-48940
StatePUBLISHED
AssignerJoomla
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 16:16:36 UTC
Updated2026-06-28 19:16:51 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 3.4 LOW from ADP

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

EPSS: 0.001670000 probability, percentile 0.063220000 (date 2026-06-30)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED3.4LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary3.4LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Joomlaworks K2 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Getk2.org K2 Extension For Joomla affected 1.0-2.26 Not specified

References

ReferenceSourceLinkTags
www.getk2.org [email protected] www.getk2.org Product
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Matan Bahar (en)

CNA: Niv Kochan (en)

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