Medium severity · published Apr 28, 2026
CVE-2026-5306
Check & Log Email < 2.0.13 - Unauthenticated Stored XSS
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
The Check & Log Email WordPress plugin before 2.0.13 does not properly handle email replacement, which could allow unauthenticated users to perform Stored XSS attacks when the email encoder setting is enabled
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Check & Log Email ·
before 2.0.13 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5306
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5306
wpscan.com
https://wpscan.com/vulnerability/97908c15-6e7a-4242-8c6f-66c8b804364c/
More from Check & Log Email
6.5
CVE-2026-14554
Check & Log Email < 2.0.15 - Admin+ SQL Injection via d and s Parameters
6.1
CVE-2022-1547
Check & Log email < 1.0.6 - Reflected Cross-Site Scripting