How severe is CVE-2026-48944?

CVE-2026-48944 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-48944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48944?

CVE-2026-48944 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48944?

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

Does CVE-2026-48944 have an EU (EUVD) identifier?

Yes. CVE-2026-48944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39440.

When was CVE-2026-48944 published?

CVE-2026-48944 was published on 2026-06-25 and last updated on 2026-06-28.

CVE-2026-48944

CVE-2026-48944 is a medium-severity vulnerability in Joomlaworks K2 with a CVSS 3.x base score of 6.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39440
Weakness: CWE-22
Affected product: Joomlaworks K2
Published: 2026-06-25
Last modified: 2026-06-28

Description

The K2 frontend article-save handler accepts an `attachment[N][existing]` POST field that is concatenated with `JPATH_SITE/` and passed to `JFile::copy()`. `JPath::clean` does NOT strip `..`, and there is no allow-list of source paths. An Author can therefore copy `configuration.php` (or any other file readable by the web user — including `../../../etc/passwd`) into `/media/k2/attachments/`, then retrieve the contents via the K2 attachment-download endpoint.

Frequently asked questions

What is CVE-2026-48944?: The K2 frontend article-save handler accepts an `attachment[N][existing]` POST field that is concatenated with `JPATH_SITE/` and passed to `JFile::copy()`. `JPath::clean` does NOT strip `..`, and there is no allow-list of source paths. An Author can therefore copy `configuration.php` (or any other file readable by the web user — including `../../../etc/passwd`) into `/media/k2/attachments/`, then retrieve the contents via the K2 attachment-download endpoint.
How severe is CVE-2026-48944?: CVE-2026-48944 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-48944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48944?: CVE-2026-48944 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48944?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48944 have an EU (EUVD) identifier?: Yes. CVE-2026-48944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39440.
When was CVE-2026-48944 published?: CVE-2026-48944 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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