CVE-2025-4963: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpextended The Ultimate WordPress Toolkit – WP Extended
The WP Extended plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 3.0.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.
AI Analysis
Technical Summary
CVE-2025-4963 is a stored cross-site scripting vulnerability in the WP Extended plugin for WordPress, affecting all versions up to 3.0.15. The flaw allows authenticated users with Author-level or higher privileges to upload SVG files containing malicious scripts. Due to improper input sanitization and output escaping, these scripts execute in the context of users viewing the SVG, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, and privileges required at the author level.
Potential Impact
An attacker with Author-level access can inject persistent malicious scripts via SVG uploads. These scripts execute in the browsers of users who view the SVG files, potentially compromising confidentiality and integrity of user sessions or data. There is no impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict Author-level user capabilities to prevent SVG uploads or disable SVG file uploads entirely. Applying strict input validation and output escaping on SVG handling can reduce risk. Avoid granting Author-level privileges to untrusted users.
CVE-2025-4963: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpextended The Ultimate WordPress Toolkit – WP Extended
Description
The WP Extended plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 3.0.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-4963 is a stored cross-site scripting vulnerability in the WP Extended plugin for WordPress, affecting all versions up to 3.0.15. The flaw allows authenticated users with Author-level or higher privileges to upload SVG files containing malicious scripts. Due to improper input sanitization and output escaping, these scripts execute in the context of users viewing the SVG, potentially leading to session hijacking or other script-based attacks. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, and privileges required at the author level.
Potential Impact
An attacker with Author-level access can inject persistent malicious scripts via SVG uploads. These scripts execute in the browsers of users who view the SVG files, potentially compromising confidentiality and integrity of user sessions or data. There is no impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict Author-level user capabilities to prevent SVG uploads or disable SVG file uploads entirely. Applying strict input validation and output escaping on SVG handling can reduce risk. Avoid granting Author-level privileges to untrusted users.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-05-19T19:18:31.576Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6836d743182aa0cae2406da7
Added to database: 5/28/2025, 9:28:35 AM
Last enriched: 4/9/2026, 10:26:03 AM
Last updated: 5/8/2026, 9:16:03 PM
Views: 74
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.