SB2021101553 - Relative Path Traversal in OpenOlat
Published: October 15, 2021 Updated: April 27, 2026
Security Bulletin ID
SB2021101553
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Relative Path Traversal (CVE-ID: CVE-2021-41152)
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to relative path traversal in folder component file download handling when processing a manipulated HTTP request. A remote user can modify the requested download path to read arbitrary files to disclose sensitive information.
Exploitation requires an OpenOlat user account or the enabled guest user feature together with usage of the folder component in a course, and only files with known paths can be read.
Remediation
Install update from vendor's website.