Joomla Extension - getk2.com - Privileged RCE vulnerability in K2 extension for Joomla < 2.26

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-48946
StatePUBLISHED
AssignerJoomla
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 16:16:37 UTC
Updated2026-06-25 19:16:38 UTC
DescriptionThe K2 frontend article-attachment upload path accepts files whose extension is `.php`, and Apache's standard mod_php matches `\.php$` and executes them under the K2 web user. A K2 Author can upload a `shell.php`, then fetch `/media/k2/attachments/shell.php` and execute arbitrary PHP code in the web server's context.

Risk And Classification

Primary CVSS: v3.1 6.3 MEDIUM from ADP

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

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

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

References

ReferenceSourceLinkTags
www.getk2.org [email protected] www.getk2.org
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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