CVE-2026-13733: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in codename065 Download Manager
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'no_data_msg' Shortcode Attribute in all versions up to, and including, 3.3.60 due to insufficient input sanitization and output escaping. 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 an injected page. Although wp_kses_post is applied to post content on save, it only strips HTML tokens and does not neutralize C-style escape sequences embedded within shortcode attribute values, meaning contributors can craft a payload that survives the kses filter and is silently reconstructed into a raw script tag at render time.
AI Analysis
Technical Summary
CVE-2026-13733 is a stored cross-site scripting vulnerability in the codename065 Download Manager WordPress plugin. It affects all versions up to 3.3.60 due to improper neutralization of input in the 'no_data_msg' shortcode attribute. Although wp_kses_post is applied on post content save, it does not neutralize C-style escape sequences within shortcode attributes, enabling authenticated contributors and above to inject arbitrary scripts. These scripts execute whenever a user accesses the injected page, potentially leading to cross-site scripting attacks.
Potential Impact
An attacker with contributor-level or higher privileges can inject persistent malicious scripts into pages via the vulnerable shortcode attribute. These scripts execute in the context of users viewing the page, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4, indicating a medium severity impact with low complexity and no user interaction required.
Mitigation Recommendations
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 removing the Download Manager plugin if feasible. Monitor for updates from codename065 regarding a security patch addressing this issue.
CVE-2026-13733: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in codename065 Download Manager
Description
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'no_data_msg' Shortcode Attribute in all versions up to, and including, 3.3.60 due to insufficient input sanitization and output escaping. 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 an injected page. Although wp_kses_post is applied to post content on save, it only strips HTML tokens and does not neutralize C-style escape sequences embedded within shortcode attribute values, meaning contributors can craft a payload that survives the kses filter and is silently reconstructed into a raw script tag at render time.
CVSS v3.1
Score 6.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13733 is a stored cross-site scripting vulnerability in the codename065 Download Manager WordPress plugin. It affects all versions up to 3.3.60 due to improper neutralization of input in the 'no_data_msg' shortcode attribute. Although wp_kses_post is applied on post content save, it does not neutralize C-style escape sequences within shortcode attributes, enabling authenticated contributors and above to inject arbitrary scripts. These scripts execute whenever a user accesses the injected page, potentially leading to cross-site scripting attacks.
Potential Impact
An attacker with contributor-level or higher privileges can inject persistent malicious scripts into pages via the vulnerable shortcode attribute. These scripts execute in the context of users viewing the page, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4, indicating a medium severity impact with low complexity and no user interaction required.
Mitigation Recommendations
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 removing the Download Manager plugin if feasible. Monitor for updates from codename065 regarding a security patch addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-29T14:43:51.291Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a44ca9927e9c797192facf2
Added to database: 07/01/2026, 08:06:49 UTC
Last enriched: 07/08/2026, 13:09:38 UTC
Last updated: 08/13/2026, 12:41:08 UTC
Views: 80
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