CVE-2026-48945 — MEDIUM (5.3)

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Joomlaworks	K2	<= 2.26

Related Weaknesses (CWE)

CWE-434

References

https://www.getk2.org/Product

FAQ

What is CVE-2026-48945?

CVE-2026-48945 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 (inclu...

How severe is CVE-2026-48945?

CVE-2026-48945 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-48945?

Check the references section above for vendor advisories and patch information. Affected products include: Joomlaworks K2.