# CVE-2026-66448: WP Chill Gallery PhotoBlocks Cross-Site Scripting in Contributor role

Source: https://junglewise.ai/threats/cve-2026-66448-wp-chill-gallery-photoblocks-cross-site-scripting-in-contributor  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-27. Updated: 2026-07-27  
License: CC BY 4.0 with a link back

CVE-2026-66448 · Severity: medium · CVSS 6.5 · Published 2026-07-27

Gallery PhotoBlocks is a WordPress plugin used to create and manage image galleries on websites. A security flaw allows users with 'Contributor' level access to inject malicious scripts into the site. If an administrator or visitor views the affected content, these scripts could be used to redirect users to malicious sites, display unauthorized advertisements, or perform actions on behalf of the victim.

Technologies: [WP Chill Gallery PhotoBlocks](https://junglewise.ai/threats/technologies/gallery-photoblocks). Vendors: [WP Chill](https://junglewise.ai/threats/vendors/wp-chill).

## Quick answers

**Is CVE-2026-66448 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-66448 being exploited in the wild.

**How severe is CVE-2026-66448?** Medium severity, with a CVSS score of 6.5, published 27 July 2026.

**Which products and versions are affected?** WP Chill Gallery PhotoBlocks <= 1.3.3.

**Is there a fix for CVE-2026-66448?** A patch was published on 2026-07-27: Version 1.3.4 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-66448 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-66448?** Check whether you run WP Chill Gallery PhotoBlocks 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.

## Technical details

The Gallery PhotoBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) in versions up to 1.3.3 due to insufficient input sanitization and output escaping. An attacker with 'Contributor' level privileges or higher can inject arbitrary web scripts into pages that execute whenever a user, including administrators, accesses the malicious content. The vulnerability requires user interaction (viewing the page) and is classified under CWE-79. The issue has been addressed in version 1.3.4.

## Affected products

- WP Chill Gallery PhotoBlocks <= 1.3.3

## Timeline

- 2026-02-11: other: Reported by Muhammad Sharief
- 2026-07-27: advisory: Published by Patchstack and NVD
- 2026-07-27: patched: Version 1.3.4 released to address the vulnerability

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/photoblocks-grid-gallery/vulnerability/wordpress-gallery-photoblocks-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/photoblocks-grid-gallery/vulnerability/wordpress-gallery-photoblocks-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [WP Chill Gallery PhotoBlocks stored cross-site scripting](https://junglewise.ai/threats/cve-2026-116408-improper-neutralization-of-input-during-web-page-generation)
- [WP Chill Gallery PhotoBlocks stored XSS](https://junglewise.ai/threats/cve-2026-114710-improper-neutralization-of-input-during-web-page-generation)
- [Gallery PhotoBlocks contributor cross-site scripting vulnerability](https://junglewise.ai/threats/cve-2026-84781-gallery-photoblocks-contributor-cross-site-scripting)