CVE-2026-48940 json
Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.26
published 2026-06-25 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-39445
- cvss
- 3.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 3.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N |
| CNA | 3.1 | 3.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N |
Affected products
- getk2.org K2 extension for Joomla
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
getk2.org
/
product
Sources
- CVE List CVE-2026-48940
- NVD CVE-2026-48940
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.