CVE-2026-14343 is a stored cross-site scripting vulnerability in the codename065 Download Manager WordPress plugin affecting all versions up to 3.3.61. The issue is due to improper neutralization of input in the 'note_before' and 'note_after' shortcode attributes, which are insufficiently sanitized and escaped before rendering. Authenticated attackers with contributor-level privileges or higher can inject arbitrary web scripts that execute when users access pages containing the injected shortcode. The WordPress wp_kses_post filter restricts some payloads for users lacking unfiltered_html, but the vulnerable output sink still allows execution of certain filtered scripts, making the vulnerability exploitable.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via shortcode attributes. These scripts execute in the browsers of users viewing the affected pages, potentially leading to session hijacking, privilege escalation, or other client-side attacks. The vulnerability affects confidentiality and integrity but does not impact availability. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial confidentiality and integrity impact.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the vulnerable shortcode attributes. Monitor vendor channels for updates and apply patches promptly once released.