WordPress Core Remote File Inclusion Vulnerability

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• cpe wordpress/wordpressversion unspecified
• vendor WordPress Coreversion unspecified

How to fix CVE-2026-87902

• Recommended remediation

  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. CISA due date Sep 28, 2026.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • Nuclei Templates · github.com
  • NIST NVD · nvd.nist.gov
  • Patchstack Database · patchstack.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Sep 22, 2026 · Catalog

   Detected

   WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make page-template resolution include a chosen readable local file outside the active theme directories, leading to remote code execution.

2. Sep 25, 2026 · CISA KEV

   Known exploited

   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

3. Sep 28, 2026 · CISA KEV

   Remediation due

   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

4. Sep 28, 2026 · Catalog

   Updated

   WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make page-template resolution include a chosen readable local file outside the active theme directories, leading to remote code execution.

Sources

• CISA KEVConfirmed exploitationCVE-2026-87902

  WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make page-template resolution include a chosen readable local file outside the active theme directories, leading to remote code execution.

  cisa.gov
• CVE.orgVulnerability recordCVE-2026-87902

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-87902

  30-day exploitation probability 40.0%

  first.org
• Exploit DatabasePublic exploit reference52690

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Nuclei TemplatesDetection templateCVE-2026-87902

  CVE-2026-87902 has a public Nuclei detection template.

  github.com
• NIST NVDVulnerability recordCVE-2026-87902

  An unauthenticated attacker can make page-template resolution include a chosen readable local file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.

  nvd.nist.gov
• Patchstack DatabaseVendor advisoryCVE-2026-87902

  WordPress 7.1.3 landed on 6 October 2026. It’s a maintenance and security release with seven security fixes and four bug fixes. Two weeks ago, 7.1.2 fixed a single vulnerability (CVE-2026-87902) that allowed an unauthenticated visitor to trigger a local file inclusion and, under

  patchstack.com
• VulnCheck KEVConfirmed exploitationCVE-2026-87902

  WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make page-template resolution include a chosen readable local file outside the active theme directories, leading to remote code execution.

  vulncheck.com

References

• CISA note · github.com
• CISA note · nvd.nist.gov
• Third Party Advisory · patchstack.com
• VulnCheck exploitation evidence · patchstack.com
• VulnCheck exploitation evidence · previdian.com
• US Government Resource · cisa.gov
• CISA note · cisa.gov
• CISA note · cisa.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · crowdsec.net
• VulnCheck exploitation evidence · x.com

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.