Path traversal in Discourse - CVE-2022-36066
Published: September 29, 2022 / Updated: July 1, 2026
Vulnerability identifier: #VU136074
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-36066
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to path traversal in archive extraction when processing a maliciously crafted Zip or Gzip Tar archive upload. A remote privileged user can upload a specially crafted archive to execute arbitrary code.
The issue allows writing files to arbitrary locations before code execution is triggered.
Affected software
Discourse
How to mitigate CVE-2022-36066
Install security update from vendor's website.
Discourse - addressed in versions 2.8.9, 2.9.0 beta10