CVE-2026-75016

Magazine Blocks <= 1.8.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'clientId' Block Attribute

6.4 Medium

The Magazine Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the News Ticker block's clientId attribute in versions up to, and including, 1.8.6. This is due to insufficient input sanitization and output escaping in the NewsTicker::render() method, which concatenates the clientId block attribute into an HTML class attribute without applying esc_attr(). 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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.35%Up 0.1 points since Sep 18, 2026

What each source reports

CVE List Score used 6.4

Magazine Blocks <= 1.8.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'clientId' Block Attribute

Record: CVE-2026-75016
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-82744 6.4

Record: EUVD-2026-82744
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3rwr-qrj8-m997 6.4

The Magazine Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the...

Record: GHSA-3rwr-qrj8-m997
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.4

Record: CVE-2026-75016
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

wpblockart magazine blocks – blog designer, magazine & newspaper website builder, page builder with posts blocks, post grid

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-75016 is a medium vulnerability (CVSS 6.4) in Wpblockart Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder With Posts Blocks, Post Grid, published September 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. No source names a fixed version.