CVE-2024-1854

MEDIUM

Essential Blocks < 4.5.1 - Authenticated Stored Cross-Site Scripting via blockId Parameter

Title source: llm

Description

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the blockId parameter in all versions up to, and including, 4.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor access or higher, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References (2)

Core 2

Core References

Product

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3041859%40essential-blocks%2Ftrunk&old=3036273%40essential-blocks%2Ftrunk&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/86364b6f-dec8-48d8-9d2d-de1ee4901872?source=cve

Scores

CVSS v3 6.4

EPSS 0.0043

EPSS Percentile 34.2%

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-20 CWE-79

Status published

Products (2)

wpdeveloper/essential_blocks < 4.5.2

wpdevteam/Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns < 4.5.1

Published Mar 13, 2024

Tracked Since Feb 18, 2026