# CVE-2026-121773: GeneratePress GenerateBlocks stored cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-121773-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-121773 · Severity: medium · CVSS 6.5 · Published 2026-11-11

GenerateBlocks is a WordPress plugin that provides page-building functionality through block-based editing. A stored cross-site scripting vulnerability in the plugin allows attackers to inject malicious scripts that can steal visitor data or hijack user accounts. Exploitation requires a contributor or higher privilege level to perform the attack.

Technologies: [GeneratePress GenerateBlocks](https://junglewise.ai/threats/technologies/generateblocks). Vendors: [GeneratePress](https://junglewise.ai/threats/vendors/generatepress).

## Quick answers

**Is CVE-2026-121773 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-121773 being exploited in the wild.

**How severe is CVE-2026-121773?** Medium severity, with a CVSS score of 6.5, published 11 November 2026.

**Which products and versions are affected?** GeneratePress GenerateBlocks up to 2.5.0.

**Is there a fix for CVE-2026-121773?** Yes: fixed in 2.5.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-121773 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-121773?** Check whether you run GeneratePress GenerateBlocks 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 2.5.1

## Technical details

The vulnerability is an improper input neutralization flaw during web page generation, resulting in stored XSS. It affects GenerateBlocks up to version 2.5.0 and requires user interaction from a privileged account (contributor or developer role). Attackers can inject malicious scripts that persist in the site and execute in visitors' browsers.

## Affected products

- GeneratePress GenerateBlocks up to 2.5.0

## Timeline

- 2026-11-02: disclosed: Vulnerability reported to Patchstack
- 2026-11-11: advisory: Published by Patchstack

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/generateblocks/vulnerability/wordpress-generateblocks-plugin-2-5-0-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/generateblocks/vulnerability/wordpress-generateblocks-plugin-2-5-0-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [Tom GenerateBlocks sensitive data exposure](https://junglewise.ai/threats/cve-2026-48877-tom-generateblocks-sensitive-data-exposure)