Back to overview

CVE-2026-48944

MEDIUM
6.5
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-48944
State
PUBLISHED
Assigner
Joomla
Reserved
2026-05-26 16:47 UTC
Published
2026-06-25 15:24 UTC
Last updated
2026-06-25 18:43 UTC
Primary CWE
CWE-22
CWE-22 Improper Limitation of a Pathname to a Restricted Dir…
Vendor / Product
getk2.com / K2 extension for Joomla
Sources
cve.org  ·  NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
getk2.com K2 extension for Joomla — 1.0-2.26
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.5 MEDIUM 3.1 adp CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References (1)
Back to overview