CVE-2026-42269 countly-server: Path Traversal in delete_import Endpoint Allows Arbitrary File and Directory Deletion
Authenticated attackers can delete arbitrary files or directories via path traversal in the data migration endpoint, causing data loss or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42269?
CVE-2026-42269 is a high-severity path traversal vulnerability in countly-server, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, the authenticated data-migration deletion route in plugins/data_migration/api/api.js passes the user-controlled exportid to clean_up_data without path validation. plugins/data_migration/api/data_migration_helper.js concatenates that identifier into a path resolved outside the intended import directory and calls remove recursively, allowing an application administrator or user with migration permission to delete writable files or directory trees and cause data loss or service disruption. This issue is fixed in versions 24.05.50 and 25.03.44.
Weakness: CWE-22
Which versions are affected by CVE-2026-42269?
How do I fix CVE-2026-42269?
No fix has been published for CVE-2026-42269 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-42269 being exploited?
There is no known exploitation of CVE-2026-42269 in the wild and no public exploit code.
Sources
Also known as GHSA-5pmc-54j6-jcgq.