---
title: "CVE-2026-111862: Rank Math SEO PRO - Supply Chain Compromise"
description: "Rank Math SEO PRO for WordPress 3.0.123 packages downloaded between October 15-16, 2026 contain a supply-chain compromise caused by malware in plugin files, letting attackers establish persistent access and expose sensitive credentials, exploit requires activation of affected plugin."
url: https://panop.io/threat-heartbeat/CVE-2026-111862/
---

# CVE-2026-111862 Rank Math SEO PRO - Supply Chain Compromise

Rank Math SEO PRO for WordPress 3.0.123 packages downloaded between October 15-16, 2026 contain a supply-chain compromise caused by malware in plugin files, letting attackers establish persistent access and expose sensitive credentials, exploit requires activation of affected plugin.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111862)

## Details

Type

Supply Chain Compromise

Impact

Information Disclosure, Privilege Escalation, Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

19 October 2026

Updated

20 October 2026

Weakness

[CWE-506](https://cwe.mitre.org/data/definitions/506.html)

## Vendor fix

Update to version 3.0.124 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-111862](https://nvd.nist.gov/vuln/detail/CVE-2026-111862)
- [https://rankmath.com/changelog/](https://rankmath.com/changelog/)
- [https://rankmath.com/kb/pro-3-0-123-security-incident/](https://rankmath.com/kb/pro-3-0-123-security-incident/)
- [https://rdap.verisign.com/com/v1/domain/rank1cdn.com](https://rdap.verisign.com/com/v1/domain/rank1cdn.com)
- [https://urlscan.io/result/01a145c2-8dc8-72ff-a65d-21209ca29c4f/](https://urlscan.io/result/01a145c2-8dc8-72ff-a65d-21209ca29c4f/)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/81cd7a2c-ad0c-4dbc-b5dc-07ec866d5c1f?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/81cd7a2c-ad0c-4dbc-b5dc-07ec866d5c1f?source=cve)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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