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CRITICAL

CVE-2020-13485

CVSS v3

9.1

CRITICAL

EPSS Score

1.4 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.

Technical details

Published
2020-05-25

Frequently asked questions

What is CVE-2020-13485?

The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.

Is CVE-2020-13485 actively exploited?

Active exploitation of CVE-2020-13485 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-13485?

CVE-2020-13485 has a CVSS v3 base score of 9.1 (CRITICAL severity).

Is CVE-2020-13485 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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