Patch nowWhy this label: added to the catalog 5 days ago

CVE-2026-119977WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability

Product: WordPress Core
Added to CISA KEV: November 3, 2026
Deadline for US federal agencies: November 6, 2026
Known ransomware use: Not known
EPSS, next 30 days: 1.2%, higher than 67% of scored CVEs (Nov 7, 2026)
Weakness: CWE-367

What CISA says

WordPress WordPress Core contains a time-of-check time-of-use (TOCTOU) race condition vulnerability that could allow unauthenticated attackers to execute code on the server during the upgrade window. This is due to predictable, web-accessible staging paths used during full-package core upgrades.

What CISA asks you to do

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.

Sources

Also exploited recently

Data from CISA's Known Exploited Vulnerabilities catalog (public domain) and FIRST EPSS, refreshed hourly. Rheono did not find or test this vulnerability; this page summarizes public sources.