CISA adds WordPress Core TOCTOU flaw to KEV
Original title: CISA Confirms Hackers Exploiting WordPress Core Flaw During Software Upgrades
CISA confirms active exploitation of CVE-2026-119977 allowing unauthenticated code execution during upgrades.
CISA added a WordPress Core vulnerability to its Known Exploited Vulnerabilities catalog. The flaw is a time-of-check time-of-use race condition that allows unauthenticated code execution on servers during upgrades. Patches released late last month. Federal agencies must apply fixes by November 6.
Unconfirmed: Exploitation attempts recorded against honeypots; no specific victim organizations named.
- CVSS score 8.1
- More than 18,500 requests in first 24 hours after disclosure
- 12,632 attacks blocked in last 24 hours
- Exploitation recorded on October 30, 2026 in UK honeypot
Impact: unauthenticated remote code execution
- 1.Apply WordPress Core patch
- 2.Follow CISA guidance for FCEB agencies
- CVEs
- CVE-2026-119977
- Vendors
- WordPress
- Products
- WordPress Core
- Organizations
- CISA
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-119977 | Unauthenticated RCE in WordPress Core during upgrades | 8.1 | <1% | KEVPoC | KEV |
From the original article
1 min read at thehackernews.com
The U. S. Cybersecurity and Infrastructure Security Agency (CISA) has added a security flaw in WordPress Core to the Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.
thehackernews.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.