Critical severity · published May 25, 2020
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
9.1
CVSS
1.4%
EPSS
No
On KEV
Description
The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KK
Knock Knock · Verbb
before 1.2.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13485
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-13485
Release Notes
https://github.com/verbb/knock-knock/blob/craft-3/CHANGELOG.md
Exploit
https://limpidsecurity.pl/security-advisories/1/knock-knock-plugin-for-craft-cms/
More from Knock Knock
6.1
CVE-2020-13486
The Knock Knock plugin before 1.2.8 for Craft CMS allows malicious redirection