Quick answers
- Is CVE-2026-75016 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75016 being exploited in the wild.
- How severe is CVE-2026-75016?
- Medium severity, with a CVSS score of 6.4, published 18 September 2026.
- Which products and versions are affected?
- Magazine Blocks Magazine Blocks up to 1.8.6.
- Is there a fix for CVE-2026-75016?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-75016 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-75016?
- Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a stored cross-site scripting (XSS) flaw in the NewsTicker::render() method of the Magazine Blocks plugin. The vulnerable code concatenates the clientId block attribute directly into an HTML class attribute without applying proper output escaping (specifically esc_attr()). Exploitation requires authentication as a contributor or higher-privileged user, allowing an attacker to inject arbitrary JavaScript that persists in page content. When other users (including administrators) visit the compromised page, the malicious script executes in their browser context. The vulnerability affects versions up to and including 1.8.6; patches are expected to be available in later releases.
Affected products
- Magazine Blocks Magazine Blocks up to 1.8.6
Timeline
- 2026-09-18: disclosed