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VulnerabilityPublished Updated

CVE-2026-48945: getk2.org K2 extension for Joomla · Unrestricted Upload via Archive Extraction

Affects getk2.org K2 extension for JoomlaSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 6 Nov 2026, 23:24 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
getk2.orgK2 extension for JoomlaAffected
  • =1.0-2.26
Fixed in–

AI-suggested

Until an official fix is available, restrict or disable archive uploads in the K2 article gallery upload feature if possible. Monitor and control file upload permissions and web server execution rights in the `/media/k2/galleries/` directory to prevent execution of unauthorized files.

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.

References

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