{"id":"CVE-2026-48944","aliases":["EUVD-2026-39440","GHSA-858x-6wp8-wp5c"],"status":"published","title":"Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla \u003c 2.26","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00443,"percentile":0.38758,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-06-25T15:24:45Z","modified":"2026-10-25T22:10:00Z","products":[{"vendor":"getk2.com","product":"k2 extension for joomla"},{"vendor":"getk2.org","product":"k2 extension for joomla"},{"vendor":"joomlaworks","product":"k2"}],"references":[{"url":"https://www.getk2.org/","tags":["product","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48944"},{"url":"https://www.getk2.org"},{"url":"https://github.com/advisories/GHSA-858x-6wp8-wp5c"}],"sources":{"cve":[{"id":"CVE-2026-48944","title":"Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla \u003c 2.26","description":"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.","status":"published","published":"2026-06-25T15:24:45.138Z","modified":"2026-06-28T18:37:04.294Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T13:50:38.739766Z"}],"euvd":[{"id":"EUVD-2026-39440","description":"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.","status":"published","published":"2026-06-25T15:24:45Z","modified":"2026-06-28T18:37:04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:23.349194Z"}],"ghsa":[{"id":"GHSA-858x-6wp8-wp5c","title":"The K2 frontend article-save handler accepts an `attachment[N][existing]` POST field that is...","description":"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.","status":"published","published":"2026-06-25T18:30:39Z","modified":"2026-06-25T21:32:34Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:08:59.978633Z"}],"nvd":[{"id":"CVE-2026-48944","description":"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.","status":"published","published":"2026-06-25T16:16:36.95Z","modified":"2026-10-25T22:10:00.15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:26.045561Z"}]}}