# CVE-2026-59531: Anh Tran Falcon WordPress plugin denial of service

Source: https://junglewise.ai/threats/cve-2026-59531-anh-tran-falcon-wordpress-plugin-denial-of-service  
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-2026-59531 · Severity: high · CVSS 7.5 · Published 2026-07-27

Falcon is a WordPress plugin used to optimize website performance and speed. A security vulnerability in versions 2.10.0 and earlier could allow an unauthenticated attacker to disrupt the website's availability. This could lead to service outages or significant performance degradation, potentially impacting user experience and business operations.

Vendors: [eLightUp](https://junglewise.ai/threats/vendors/elightup).

## Quick answers

**Is CVE-2026-59531 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-59531 being exploited in the wild.

**How severe is CVE-2026-59531?** High severity, with a CVSS score of 7.5, published 27 July 2026.

**Which products and versions are affected?** eLightUp Falcon – WordPress Optimizations & Tweaks <= 2.10.0.

**Is there a fix for CVE-2026-59531?** A patch was published on 2026-07-27: Patch available in version 2.10.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-59531 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-59531?** Check whether you run eLightUp Falcon – WordPress Optimizations & Tweaks 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 Falcon – WordPress Optimizations & Tweaks plugin for WordPress (versions up to and including 2.10.0) is vulnerable to a high-severity issue classified as Improper Validation of Specified Quantity (CWE-1284). An unauthenticated remote attacker can exploit this flaw over the network without any user interaction. Based on the CVSS vector, the primary impact is on system availability, suggesting the vulnerability can be used to trigger a denial-of-service (DoS) condition. The issue is addressed in version 2.10.1.

## Affected products

- Anh Tran (eLightUp) Falcon – WordPress Optimizations & Tweaks <= 2.10.0

## Timeline

- 2026-04-30: other: Reported by researcher dodoh4t
- 2026-07-23: advisory: Patchstack advisory published
- 2026-07-27: disclosed: CVE published to NVD
- 2026-07-27: patched: Patch available in version 2.10.1

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/falcon/vulnerability/wordpress-falcon-wordpress-optimizations-tweaks-plugin-2-10-0-unknown-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/falcon/vulnerability/wordpress-falcon-wordpress-optimizations-tweaks-plugin-2-10-0-unknown-vulnerability?_s_id=cve)

## Related threats

- [eLightUp Falcon broken access control in plugin](https://junglewise.ai/threats/cve-2026-112826-missing-authorization-vulnerability-in-elightup-falcon-wordpress)