Actively exploited · Published Oct 31, 2026 · Assigned by Wordfence

CVE-2026-119977WordPress Core 4.7.0 - 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution

High 8.1 Exploited

In plain English

A high-severity security flaw in WordPress from WordPress Foundation. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2026). The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 67% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)1.2%top 32.8% of all CVEs

Exploited in the wildYesCISA KEV since Nov 3, 2026

Attack tooling1Public PoC

CISA guidance

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.

Federal agencies must remediate by Nov 6, 2026.

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	wordpress	no fix listed	DEBIAN-CVE-2026-119977
Debian:13	wordpress	6.8.12+dfsg1-0+deb13u1	DEBIAN-CVE-2026-119977
Debian:14	wordpress	7.1.4+dfsg1-1	DEBIAN-CVE-2026-119977

Affected products (as reported)

Vendor	Product	Versions
WordPress Foundation	WordPress	4.7.0 – through 4.7.384.8.0 – through 4.8.334.9.0 – through 4.9.345.0.0 – through 5.0.305.1.0 – through 5.1.275.2.0 – through 5.2.295.3.0 – through 5.3.265.4.0 – through 5.4.24

Weakness: CWE-367 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H