CVE-2024-13803

MEDIUM

Essential Blocks < 5.2.3 - Authenticated Stored Cross-Site Scripting via Data-Marker Parameter

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 6.4
EPSS 0.0045
EPSS Percentile 35.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
wpdeveloper/essential_blocks < 5.2.3
wpdevteam/Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns < 5.2.3
Published Feb 26, 2025
Tracked Since Feb 18, 2026