CVE-2026-15382

Ultimate Addons for WPBakery Page Builder < 3.21.4 - Unauthenticated Custom Icon Font Deletion

2026-07-10 00:00
Trần Tiến

Strategic Overview

Status
Patched in 3.21.4
Affected Plugin
Ultimate Addons for WPBakery
Affected Version
< 3.21.4
CVSS
5.3Medium
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE
CVE-2026-15382
View all Ultimate Addons for WPBakery vulnerabilities

At a glance

CVE-2026-15382 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Ultimate Addons for WPBakery WordPress plugin, affecting versions < 3.21.4. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.21.4; sites on affected versions should update now. Disclosed July 2026, reported by Trần Tiến.

Vulnerability Overview

The Ultimate Addons for WPBakery plugin for WordPress is vulnerable to file deletion in all versions up to 3.21.4 (exclusive). This makes it possible for unauthenticated attackers to delete custom icon fonts.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Reaching this weakness in Ultimate Addons for WPBakery < 3.21.4 takes no account at all. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For Ultimate Addons for WPBakery the fix is 3.21.4: builds < 3.21.4 are affected, anything from 3.21.4 onward is not.

Remediation

Update to version 3.21.4, or a newer patched version

How WordSec helps

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Ultimate Addons for WPBakery 3.21.4 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-15382https://www.wordfence.com/threat-intel/vulnerabilities/id/45b81d01-1ecc-4881-9e21-48b8fcb732eahttps://nvd.nist.gov/vuln/detail/CVE-2026-15382

Related records

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