{"id":"CVE-2026-48946","title":"The K2 frontend article-attachment upload path accepts files whose extension is `.php`, and Apache's standard mod_php matches `\\.php$` and executes them under the K2 web user","summary":"The K2 frontend article-attachment upload path accepts files whose extension is `.php`, and Apache's standard mod_php matches `\\.php$` and executes them under the K2 web user. A K2 Author can upload a `shell.php`, then fetch `/media/k2/a…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-434"],"published":"2026-06-25","updated":"2026-06-28","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48946","references":[{"url":"https://www.getk2.org/","label":"security@joomla.org"}],"tags":["nvd"],"epss":0.00284,"epssPercentile":0.21085,"ingestedAt":"2026-06-29T13:42:12.014Z","slug":"CVE-2026-48946","body":"## Overview\n\nThe K2 frontend article-attachment upload path accepts files whose extension is `.php`, and Apache's standard mod_php matches `\\.php$` and executes them under the K2 web user. A K2 Author can upload a `shell.php`, then fetch `/media/k2/attachments/shell.php` and execute arbitrary PHP code in the web server's context.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}