What is CVE-2026-119977?
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.
Timeline
- 2026-10-31Published to the U.S. National Vulnerability Database (NVD)
- 2026-11-03Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
- 2026-11-04NVD record last updated
- 2026-11-06CISA federal remediation deadline (BOD 22-01)
CISA Known Exploited Vulnerability
WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability
Affected product
WordPress Core
Remediation Steps
- Consult CISA Known Exploited Vulnerabilities Catalog for affected product details
- Apply vendor-supplied security patch immediately
- Verify patch deployment across all affected systems
References
- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-core-upgrader.php#L162
- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-wp-upgrader.php#L378
- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/update-core.php#L1549
- https://nvd.nist.gov/vuln/detail/CVE-2026-119977
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Referenced in our briefings & reports
- Vulnerability Priority Report – Week 1 of November 2026 (November 2 – 8)
Related vulnerabilities
- CVE-2026-87902 – WordPress Core (same vendor)
- CVE-2026-60137 – WordPress Core (same vendor)
- CVE-2026-63030 – WordPress Core (same vendor)
- CVE-2015-3246 – Red Hat Libuser (same weakness: CWE-367)
Browse all tracked CVEs in the defend.network CVE database →
🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.