CVE-2020-13485
CRITICALCVSS 9.1/10EPSS 1.35%
Last modified
CVE-2020-13485 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.
Description
The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Verbb | Knock Knock | < 1.2.8 |
References
- https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.mdRelease Notes, Third Party Advisory
- https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/Exploit, Third Party Advisory
- https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.mdRelease Notes, Third Party Advisory
- https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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.
How severe is CVE-2020-13485?
CVE-2020-13485 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.
How do I fix CVE-2020-13485?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-13485?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST