WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run WordPress Core, fix it now.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
US federal civilian agencies must remediate by Nov 6, 2026.
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
WordPress Core is vulnerable to Remote Code Execution in versions 4.7 through 7.1.3. This is due to predictable, web-accessible staging paths used during full-package core upgrades. This makes it possible for unauthenticated attackers to execute code on the server during the upgrade window.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
| Product | Vendor | Source |
|---|---|---|
| WordPress Core | WordPress | KEV |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.
Developments from the last 30 days, newest first.
CVE-2026-119977 scored CVSS 8.1: WordPress WordPress Core, WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability
CISA lists this as exploited in the wild. Unpatched WordPress Core systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
CVE-2026-119977 added to CISA KEV: WordPress WordPress Core, WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability
CISA lists this as exploited in the wild. Unpatched WordPress Core systems are exposed to active attacks now.
Basis: CISA Known Exploited Vulnerabilities catalog
CISA lists this as exploited in the wild. Unpatched WordPress and WordPress Core systems are exposed to active attacks now.
Apply the vendor's security update for WordPress and WordPress Core.
