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CVE-2026-48944

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 6.5 · joomlaworksNVD modified 2026-10-25 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:joomlaworks:k2:*:*:*:*:*:joomla\!:*:*

References 1