XSS in Onlineoptimisation Email Encoder – Protect Addresses And Phone Numbers
CVE-2023-4599
The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (36.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@wordfence.com (Third Party Advisory)
- security@wordfence.com (Product)
- security@wordfence.com (Product)
- security@wordfence.com
Frequently asked questions
- What is CVE-2023-4599?
- CVE-2023-4599 is a medium-severity vulnerability in Onlineoptimisation Email Encoder – Protect Addresses And Phone Numbers, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2023-08-30.
- How severe is CVE-2023-4599?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2023-4599 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.