CVE-2026-115955: bPlugins Advanced Post Block stored cross-site scripting

CVE-2026-115955 · Severity: medium · CVSS 6.5 · Published 2026-10-26

Advanced Post Block is a WordPress plugin for the block editor that lets site administrators display posts in grid layouts. A stored cross-site scripting vulnerability in versions up to 2.5.1 allows attackers to inject malicious scripts that execute in visitors' browsers, potentially stealing their data or hijacking their accounts.

Vendors: bPlugins.

Quick answers

Is CVE-2026-115955 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-115955 being exploited in the wild.
How severe is CVE-2026-115955?
Medium severity, with a CVSS score of 6.5, published 26 October 2026.
Which products and versions are affected?
bPlugins Advanced Post Block - Post Grid for WordPress block editor through 2.5.1.
Is there a fix for CVE-2026-115955?
Yes: fixed in 2.5.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-115955 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-115955?
Check whether you run bPlugins Advanced Post Block - Post Grid for WordPress block editor 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: 2.5.2

Technical details

A stored XSS vulnerability exists in Advanced Post Block - Post Grid for WordPress block editor through version 2.5.1, allowing improper neutralization of input during web page generation. Exploitation requires a privileged user (contributor or developer role) to interact with a malicious link or form, after which the injected script persists and executes for all site visitors. The vulnerability is fixed in version 2.5.2.

Affected products

  • bPlugins Advanced Post Block - Post Grid for WordPress block editor through 2.5.1

Timeline

  • 2026-10-17: disclosed: Reported by V1T
  • 2026-10-26: advisory: Published by Patchstack

References

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