managewp ManageWP Worker Plugin up to 4.9.31 on WordPress HTTP Request Header cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in managewp ManageWP Worker Plugin up to 4.9.31 on WordPress. This impacts an unknown function of the component HTTP Request Header Handler. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-3718. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in managewp ManageWP Worker Plugin up to 4.9.31 on WordPress. This issue affects some unknown processing of the component HTTP Request Header Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

The ManageWP Worker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'MWP-Key-Name' HTTP request header in all versions up to, and including, 4.9.31. This is due to insufficient input sanitization and output escaping of attacker-controlled header values. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator visits the plugin's connection management page with debug parameters.

The weakness was published by Do Phuc. The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-3718 since 03/07/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• managewp

Name

• ManageWP Worker Plugin

Version

• 4.9.0
• 4.9.1
• 4.9.2
• 4.9.3
• 4.9.4
• 4.9.5
• 4.9.6
• 4.9.7
• 4.9.8
• 4.9.9
• 4.9.10
• 4.9.11
• 4.9.12
• 4.9.13
• 4.9.14
• 4.9.15
• 4.9.16
• 4.9.17
• 4.9.18
• 4.9.19
• 4.9.20
• 4.9.21
• 4.9.22
• 4.9.23
• 4.9.24
• 4.9.25
• 4.9.26
• 4.9.27
• 4.9.28
• 4.9.29
• 4.9.30
• 4.9.31

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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