CVE-2023-4599

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
onlineoptimisation	Email Encoder – Protect Email Addresses and Phone Numbers	<= 2.1.8

References

Timeline

Published: Aug 30, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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