CVE-2026-119977: WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability
WordPress WordPress Core · in CISA KEV since 2026-11-03
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What it is
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.
Required action (CISA)
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.
| CWE | CWE-367 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2026-10-31 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-119977.json · all KEV CVEs
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