Exploited vulnerability · CISA KEV

Is CVE-2026-119977 exploited? Yes: in CISA KEV since 3 Nov 2026

Gociux · WordPress Core · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-119977, WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2026, 3 days after it was published. It affects WordPress Core. If you run it, CISA's required action is: 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.

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.

What to do

1. Check whether you run it. Look for WordPress Core in your asset inventory, including appliances and cloud images. Stack check lists every exploited WordPress CVE at once.
2. Apply the fix. 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.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 31 Oct 2026.
4. Get told next time. Email alerts when CISA adds a CVE for WordPress.

References

• wordpress.org/news/2026/10/wordpress-7-1-4
• www.wordfence.com/threat-intel/vulnerabilities/wordpress-core/wordpress-core-
• nvd.nist.gov/vuln/detail/CVE-2026-119977

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2026 · WordPress scorecard · act-now radar.