CVE-2026-3354: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mooeypoo Wikilookup
The Wikilookup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Popup Width' setting in all versions up to, and including, 1.1.5. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI Analysis
Technical Summary
CVE-2026-3354 is a stored cross-site scripting vulnerability in the mooeypoo Wikilookup WordPress plugin. It occurs due to improper neutralization of input in the 'Popup Width' setting, allowing authenticated users with administrator privileges to inject arbitrary scripts that execute when other users access the affected pages. This vulnerability specifically impacts multi-site WordPress installations or those where unfiltered_html is disabled. The CVSS 3.1 base score is 4.4, reflecting a medium severity with network attack vector, high attack complexity, and requiring high privileges with no user interaction.
Potential Impact
An attacker with administrator-level access can exploit this vulnerability to inject malicious scripts that execute in the context of other users visiting the injected pages. This can lead to limited confidentiality and integrity impacts, such as theft of session tokens or modification of displayed content. The vulnerability does not affect availability and requires high privileges and specific WordPress configurations to be exploitable.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Administrators should monitor the vendor's advisory channels for updates. Until a fix is released, limit administrator access to trusted users and consider disabling or replacing the Wikilookup plugin in multi-site environments or where unfiltered_html is disabled to reduce risk.
CVE-2026-3354: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mooeypoo Wikilookup
Description
The Wikilookup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Popup Width' setting in all versions up to, and including, 1.1.5. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3354 is a stored cross-site scripting vulnerability in the mooeypoo Wikilookup WordPress plugin. It occurs due to improper neutralization of input in the 'Popup Width' setting, allowing authenticated users with administrator privileges to inject arbitrary scripts that execute when other users access the affected pages. This vulnerability specifically impacts multi-site WordPress installations or those where unfiltered_html is disabled. The CVSS 3.1 base score is 4.4, reflecting a medium severity with network attack vector, high attack complexity, and requiring high privileges with no user interaction.
Potential Impact
An attacker with administrator-level access can exploit this vulnerability to inject malicious scripts that execute in the context of other users visiting the injected pages. This can lead to limited confidentiality and integrity impacts, such as theft of session tokens or modification of displayed content. The vulnerability does not affect availability and requires high privileges and specific WordPress configurations to be exploitable.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Administrators should monitor the vendor's advisory channels for updates. Until a fix is released, limit administrator access to trusted users and consider disabling or replacing the Wikilookup plugin in multi-site environments or where unfiltered_html is disabled to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-27T17:05:16.929Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69be180ef4197a8e3b784351
Added to database: 3/21/2026, 4:01:18 AM
Last enriched: 4/9/2026, 11:34:32 AM
Last updated: 5/3/2026, 8:17:27 PM
Views: 31
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