CVE-2026-1646

MEDIUM

Advance Block Extend <= 1.0.4 - Authenticated Stored Cross-Site Scripting via TitleColor Block Attribute

Title source: llm
STIX 2.1

Description

The Advance Block Extend plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the TitleColor block attribute in the Latest Posts Gutenberg block in all versions up to, and including, 1.0.4 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 0.0023
EPSS Percentile 13.5%
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 (1)
iamjaydip/Advance Block Extend < 1.0.4
Published Feb 19, 2026
Tracked Since Feb 19, 2026