CVE-2024-13803: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-marker’ parameter in all versions up to, and including, 5.2.3 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.
AI Analysis
Technical Summary
CVE-2024-13803 is a stored cross-site scripting vulnerability in the wpdevteam Essential Blocks – Page Builder for Gutenberg Blocks & Patterns WordPress plugin, affecting all versions up to 5.2.3. The vulnerability is due to improper neutralization of input during web page generation, specifically insufficient sanitization and output escaping of the 'data-marker' parameter. Authenticated users with Contributor-level permissions or higher can exploit this to inject arbitrary web scripts that execute when other users access the compromised pages. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial impact on confidentiality and integrity without availability impact.
Potential Impact
Successful exploitation allows authenticated users with Contributor-level access or higher to inject persistent malicious scripts into pages, which execute in the context of other users viewing those pages. This can lead to partial confidentiality and integrity compromise of user data or session information. There is no reported impact on availability. No known exploits in the wild have been reported.
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 and higher user permissions to trusted users only. Monitor plugin updates from wpdevteam for a security patch addressing this vulnerability.
CVE-2024-13803: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
Description
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-marker’ parameter in all versions up to, and including, 5.2.3 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.
CVSS v3.1
Score 6.4medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-13803 is a stored cross-site scripting vulnerability in the wpdevteam Essential Blocks – Page Builder for Gutenberg Blocks & Patterns WordPress plugin, affecting all versions up to 5.2.3. The vulnerability is due to improper neutralization of input during web page generation, specifically insufficient sanitization and output escaping of the 'data-marker' parameter. Authenticated users with Contributor-level permissions or higher can exploit this to inject arbitrary web scripts that execute when other users access the compromised pages. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial impact on confidentiality and integrity without availability impact.
Potential Impact
Successful exploitation allows authenticated users with Contributor-level access or higher to inject persistent malicious scripts into pages, which execute in the context of other users viewing those pages. This can lead to partial confidentiality and integrity compromise of user data or session information. There is no reported impact on availability. No known exploits in the wild have been reported.
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 and higher user permissions to trusted users only. Monitor plugin updates from wpdevteam for a security patch addressing this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-01-30T01:13:20.800Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6d16b7ef31ef0b56dc9c
Added to database: 2/25/2026, 9:43:50 PM
Last enriched: 4/9/2026, 6:50:11 AM
Last updated: 5/29/2026, 12:16:12 PM
Views: 34
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