All vulnerabilities
CVE-2026-85081

File Manager: Multiple elFinder Plugins - DOM-based XSS via postMessage Origin Bypass

Unknown File Manager
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in8.0.5Also 1.2.1, 2.1.3CVE List
Published26 Sep 2026Updated 26 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The File Manager WordPress plugin before 8.0.5, FileOrganizer WordPress plugin before 1.2.1, File Manager Pro WordPress plugin before 2.1.3 do not correctly validate the origin of window messages received by the file browser they load on their admin screens, accepting any origin that is a leading string prefix of the site's own address, which allows an unauthenticated attacker to run arbitrary JavaScript in the session of a logged-in administrator who visits a page under their control.

The defect is in the file-manager library all three bundle, and every version below 2.1.70 carries it. Updating the bundled library closes it.

Text from CVE List

Affected versions 3

  • File Manageraffected: all versions before 8.0.5CVE List
  • FileOrganizeraffected: all versions before 1.2.1CVE List
  • File Manager Proaffected: all versions before 2.1.3CVE List

References 1