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VULNERABILITY BRIEF🟠 High Vulnerability

Remote File Inclusion in WordPress Core (CVE‑2026‑87902) Enables Total Asset Takeover

CISA added CVE‑2026‑87902, a remote file‑inclusion bug in WordPress core, to its KEV catalog after confirming active exploitation. The flaw grants attackers full control of vulnerable sites, underscoring the need for rapid, auditable vulnerability remediation.

LiveThreat™ Intelligence · 📅 September 26, 2026· 📰 cisa.gov
🟠
Severity
High
VU
Type
Vulnerability
🎯
Confidence
High
🏢
Affected
1 sector(s)
✅
Actions
4 recommended
📰
Source
cisa.gov

Remote File Inclusion in WordPress Core (CVE‑2026‑87902) Enables Total Asset Takeover

What It Is — WordPress Core contains a Remote File Inclusion (RFI) flaw that allows an unauthenticated attacker to upload and execute arbitrary files on the web server.

Exploitability — Active exploitation has been confirmed; the vulnerability is listed in CISA’s Known Exploited Vulnerabilities (KEV) catalog. CVSS v3.1 scores in the high‑to‑critical range.

Affected Products — All supported versions of the WordPress content‑management system (core).

Why It Matters for Trust & Control Assurance

  • Demonstrates the need for continuous vulnerability‑management controls that can surface and prioritize high‑risk flaws across public‑facing assets.
  • Provides concrete evidence that a missing patch creates a control gap, which auditors will flag when reviewing asset‑hardening and change‑management processes.
  • Highlights the importance of maintaining defensible remediation evidence (e.g., patch tickets, scan results) to satisfy multiple frameworks that map to the “Vulnerability Management” control objective.

Recommended Actions

  • Verify WordPress version and apply the vendor‑released patch for CVE‑2026‑87902 immediately.
  • Run an authenticated scan of all public‑facing WordPress instances to confirm remediation.
  • Capture remediation tickets, scan logs, and configuration snapshots as audit‑ready evidence of control execution.
  • Integrate the KEV feed into your continuous monitoring platform to auto‑prioritize future high‑risk disclosures.

Source: CISA Advisory – Known Exploited Vulnerabilities Catalog

📰 Original Source
https://www.cisa.gov/news-events/alerts/2026/09/25/cisa-adds-one-known-exploited-vulnerability-catalog ↗

This LiveThreat Intelligence Brief is an independent analysis. Read the original reporting at the link above.

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