PT-2026-31571 · Codename065 · Download Manager

Djaidja Moundjid · Published 2026-04-09 · Updated 2026-04-09 · CVE-2026-5357

Mitre

CVSS v3.1

6.4

Medium

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sid' parameter of the 'wpdm members' shortcode in versions up to and including 3.3.52. This is due to insufficient input sanitization and output escaping on the user-supplied 'sid' shortcode attribute. The sid parameter is extracted without sanitization in the members() function and stored via update post meta(), then echoed directly into an HTML id attribute in the members.php template without applying esc attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-5357

Affected Products

Download Manager

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-5357 · Security Note
• https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/User/User.php#L175 · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3501300%40download-manager&new=3501300%40download-manager&sfp_email=&sfph_mail= · Note
• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.51/src/User/views/members.php#L10 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/27fc81b0-c03a-4de7-bc38-791401d1685b?source=cve · Note
• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.51/src/User/User.php#L175 · Note
• https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/User/views/members.php#L10 · Note