SB2023031053 - Path traversal in Flarum
Published: March 10, 2023 Updated: April 20, 2026
Security Bulletin ID
SB2023031053
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Path traversal (CVE-ID: CVE-2023-27577)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to read sensitive server files.
The vulnerability exists due to path traversal in the LESS parser when processing custom LESS settings. A remote privileged user can provide an absolute path to a sensitive file to read sensitive server files.
Exploitation requires control of an admin account.
Remediation
Install update from vendor's website.