Critical

Installing the Fix for an Exploited WordPress Flaw Can Expose Some Sites One Last Time

The Hacker News

November 6, 2026 at 4:08 PM

Actively Exploited

Overview

A newly discovered flaw in WordPress has raised concerns about the security of some websites during the update process. Umut Bayram, a researcher from Picus Security, revealed that while sites are installing the fix for this actively exploited vulnerability, they could still be at risk. The update process temporarily uses old, unpatched code, which could allow attackers to execute malicious code if they strike while the fix is being applied. To protect themselves, website administrators are advised to restrict web access during the update. This situation emphasizes the need for careful handling of updates to safeguard against potential breaches.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: WordPress sites, specifically those using the unpatched code during the update process.
Action Required: Block web access during the update process to prevent unauthorized access.
Timeline: Newly disclosed

Original Article Summary

Some WordPress sites can still be attacked while they install the fix for an actively exploited flaw, according to Umut Bayram, the Picus Security researcher who found it. The update that installs the fix still unpacks its files using the site's old, unpatched code, so an attacker who strikes at the right moment can run code on the server. The researcher advises blocking web access to the

Impact

WordPress sites, specifically those using the unpatched code during the update process.

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Block web access during the update process to prevent unauthorized access. Ensure that the latest security updates are applied as soon as possible after installation.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Vulnerability, Update.

Read Original Article

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