Path traversal in Etherpad - #VU151601
Published: September 22, 2026
Vulnerability identifier: #VU151601
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access filesystem paths outside intended plugin directories.
The vulnerability exists due to improper limitation of a pathname to a restricted directory in plugin dependency path construction when processing plugin dependency names from package.json. A remote privileged user can supply a crafted plugin dependency name to access filesystem paths outside intended plugin directories.
Exploitation requires access to the admin-gated plugin installation feature.
Affected software
Etherpad
Remediation
Install security update from vendor's website.
Etherpad - update to 3.3.0