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

Source: https://junglewise.ai/threats/cve-2026-115955-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-26. Updated: 2026-10-26  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/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

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/advanced-post-block/vulnerability/wordpress-advanced-post-block-post-grid-for-wordpress-block-editor-plugin-2-5-1-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/advanced-post-block/vulnerability/wordpress-advanced-post-block-post-grid-for-wordpress-block-editor-plugin-2-5-1-cross-site-scripting-xss-vulnerability?_s_id=cve)