What is CVE-2026-48940?

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

How severe is CVE-2026-48940?

CVE-2026-48940 has a CVSS 3.x base score of 3.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-48940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48940?

CVE-2026-48940 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-48940 have an EU (EUVD) identifier?

Yes. CVE-2026-48940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39445.

When was CVE-2026-48940 published?

CVE-2026-48940 was published on 2026-06-25 and last updated on 2026-06-28.

CVE-2026-48940

CVE-2026-48940 is a low-severity vulnerability in Joomlaworks K2 with a CVSS 3.x base score of 3.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 3.x base score 3.4)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39445
Weakness: CWE-79
Affected product: Joomlaworks K2
Published: 2026-06-25
Last modified: 2026-06-28

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.

Frequently asked questions

What is CVE-2026-48940?: 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.
How severe is CVE-2026-48940?: CVE-2026-48940 has a CVSS 3.x base score of 3.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-48940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48940?: CVE-2026-48940 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48940 have an EU (EUVD) identifier?: Yes. CVE-2026-48940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39445.
When was CVE-2026-48940 published?: CVE-2026-48940 was published on 2026-06-25 and last updated on 2026-06-28.

References

https://www.getk2.org/

Affected products (1)

cpe:2.3:a:joomlaworks:k2:*:*:*:*:*:joomla\!:*:*

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