# CVE-2026-27429: BoldThemes Nifty PHP object injection

Source: https://junglewise.ai/threats/cve-2026-27429-boldthemes-nifty-php-object-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-17. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2026-27429 · Severity: critical · CVSS 9.8 · Published 2026-06-17

The Nifty theme for WordPress is vulnerable to a critical security flaw that allows unauthorized attackers to inject malicious code into a website. This theme is used to design and manage the appearance of WordPress sites; an exploit could lead to a total takeover of the website, theft of customer data, or a complete service outage. Business owners should update to the latest version immediately to prevent automated attacks.

Vendors: [BoldThemes](https://junglewise.ai/threats/vendors/boldthemes).

## Quick answers

**Is CVE-2026-27429 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27429 being exploited in the wild.

**How severe is CVE-2026-27429?** Critical severity, with a CVSS score of 9.8, published 17 June 2026.

**Which products and versions are affected?** BoldThemes Nifty <= 1.4.1.

**Is there a fix for CVE-2026-27429?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-27429 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-27429?** Check whether you run BoldThemes Nifty 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

A PHP Object Injection vulnerability exists in the Nifty theme for WordPress (versions <= 1.4.1) due to improper deserialization of user-supplied data (CWE-502). An unauthenticated remote attacker can exploit this by sending specially crafted input to the application. If a suitable Property-Oriented Programming (POP) chain is present within the environment, the attacker can achieve remote code execution, perform SQL injection, or conduct arbitrary file deletion. The vulnerability is resolved in version 1.4.2.

## Affected products

- BoldThemes (Patchstack) Nifty <= 1.4.1

## Timeline

- 2025-10-19: other: Vulnerability reported by researcher Bonds
- 2026-06-12: advisory: Patchstack published advisory
- 2026-06-17: disclosed: CVE published to NVD

## References

- [https://wordpress.org/themes](https://wordpress.org/themes)
- [https://patchstack.com/database/wordpress/theme/nifty/vulnerability/wordpress-nifty-theme-1-4-1-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/theme/nifty/vulnerability/wordpress-nifty-theme-1-4-1-php-object-injection-vulnerability?_s_id=cve)