How severe is CVE-2026-48946?

CVE-2026-48946 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-48946 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-2026-48946?

CVE-2026-48946 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48946?

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

Does CVE-2026-48946 have an EU (EUVD) identifier?

Yes. CVE-2026-48946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39442.

When was CVE-2026-48946 published?

CVE-2026-48946 was published on 2026-06-25 and last updated on 2026-06-28.

CVE-2026-48946

CVE-2026-48946 is a medium-severity vulnerability in Joomlaworks K2 with a CVSS 3.x base score of 6.3. 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-434.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39442
Weakness: CWE-434
Affected product: Joomlaworks K2
Published: 2026-06-25
Last modified: 2026-06-28

Description

The 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.

Frequently asked questions

What is CVE-2026-48946?: The 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.
How severe is CVE-2026-48946?: CVE-2026-48946 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-48946 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-2026-48946?: CVE-2026-48946 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48946?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48946 have an EU (EUVD) identifier?: Yes. CVE-2026-48946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39442.
When was CVE-2026-48946 published?: CVE-2026-48946 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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