Path traversal in Joomla! - CVE-2021-26028
Published: March 2, 2021
Vulnerability identifier: #VU51118
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-26028
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to overwrite files on the system
The vulnerability exists due to input validation error when processing directory traversal sequences within zip archives. A remote user can pass specially crafted .zip file to the application and write files outside of the intended path.
Affected software
Joomla!
How to mitigate CVE-2021-26028
Install update from vendor's website.
Joomla! - update to 3.9.25