How severe is CVE-2026-48945?

CVE-2026-48945 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-48945 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48945?

CVE-2026-48945 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48945?

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

Does CVE-2026-48945 have an EU (EUVD) identifier?

Yes. CVE-2026-48945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39447.

When was CVE-2026-48945 published?

CVE-2026-48945 was published on 2026-06-25 and last updated on 2026-06-28.

CVE-2026-48945

CVE-2026-48945 is a medium-severity vulnerability in Joomlaworks K2 with a CVSS 3.x base score of 5.3. 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 5.3)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39447
Weakness: CWE-434
Affected product: Joomlaworks K2
Published: 2026-06-25
Last modified: 2026-06-28

Description

The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/<id>/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.

Frequently asked questions

What is CVE-2026-48945?: The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/<id>/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.
How severe is CVE-2026-48945?: CVE-2026-48945 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-48945 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48945?: CVE-2026-48945 affects Joomlaworks K2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48945?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48945 have an EU (EUVD) identifier?: Yes. CVE-2026-48945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39447.
When was CVE-2026-48945 published?: CVE-2026-48945 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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