CVE-2026-119977highunder attackCWE-367

CVE-2026-119977: high-severity vulnerability in WordPress

WordPress Core 4.7.0 - 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution

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71Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 8.1epss 1.2%
from disclosure to weaponsame day
Published on NVDOct 31
1st PoCNov 15
CISA KEV+3d
Action required by CISAfederal deadline: 2026-11-06

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.

In short

WordPress versions 4.7 through 7.1.3 have a flaw that lets an unauthenticated visitor run code on the server while a core upgrade is in progress. Attackers can exploit it during that short upgrade window.

Technical detail

Unauthenticated remote code execution in WordPress Core 4.7 through 7.1.3 (CVSS 8.1, CWE-367). Full-package core upgrades stage files at predictable, web-accessible paths, and an attacker can reach them during the upgrade window, which requires no authentication. Successful exploitation yields code execution on the server, with high impact to confidentiality, integrity and availability.

Summary generated and translated by AI from the official description.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
WordPress Foundation · WordPress
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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