Is CVE-2026-125451 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-125451 being exploited in the wild.

How severe is CVE-2026-125451?

Medium severity, with a CVSS score of 6.5, published 11 November 2026.

Which products and versions are affected?

bPlugins B Blocks through 2.1.15.

Is there a fix for CVE-2026-125451?

Yes: fixed in 2.1.16. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-125451 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-125451?

Check whether you run bPlugins B Blocks at an affected version. 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.

CVE-2026-125451: bPlugins B Blocks stored cross-site scripting

CVE-2026-125451 · Severity: medium · CVSS 6.5 · Published 2026-11-11

B Blocks is a WordPress plugin that adds Gutenberg block editing capabilities to WordPress sites. The plugin contains a stored cross-site scripting vulnerability that allows authenticated attackers with contributor-level permissions to inject malicious scripts into the site. Successful exploitation could enable attackers to steal visitor data, hijack user accounts, or deface the website.

Technologies: bPlugins B Blocks. Vendors: bPlugins.

Quick answers

Is CVE-2026-125451 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-125451 being exploited in the wild.
How severe is CVE-2026-125451?: Medium severity, with a CVSS score of 6.5, published 11 November 2026.
Which products and versions are affected?: bPlugins B Blocks through 2.1.15.
Is there a fix for CVE-2026-125451?: Yes: fixed in 2.1.16. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-125451 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-125451?: Check whether you run bPlugins B Blocks at an affected version. 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.

How to fix

Fixed in: 2.1.16

Technical details

The vulnerability is an improper neutralization of input during web page generation, resulting in stored XSS. Exploitation requires contributor-level or higher privileges and user interaction (such as clicking a malicious link or submitting a form). The attacker gains the ability to execute arbitrary JavaScript in the context of the website for all visitors.

Affected products

bPlugins B Blocks through 2.1.15

Timeline

2026-10-17: disclosed: Reported to Patchstack
2026-11-11: advisory: Published by Patchstack

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.