CVE-2026-48940
Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.26
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.26
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.
- Record
CVE-2026-48940- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-39445
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.
- Record
EUVD-2026-39445- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4gq9-7rp6-9749
A Joomla user with K2 "create item" rights (Author tier by default) can submit an article whose ...
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.
- Record
GHSA-4gq9-7rp6-9749- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-48940- CVSS 3.1
- 3.4 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-48940 is a low vulnerability (CVSS 3.4) in Getk2.com K2 Extension For Joomla, published June 25, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 21st percentile. No source names a fixed version.