CVE-2023-47821 MEDIUM

CVE-2023-47821: WordPress Email Encoder Bundle Plugin <= 2.1.8 is vulnerable to Cross Site Scripting (XSS)

Vendor Jannis Thuemmig

Product Email Encoder

Weakness CWE-79 · XSS

Published November 22, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jannis Thuemmig Email Encoder plugin <= 2.1.8 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Email Encoder versions up to 2.1.8 contain a cross-site scripting vulnerability in how they process and display encoded email addresses. An attacker with low-level site access can inject malicious scripts that execute in other users' browsers when they view the encoded email. The vulnerability requires user interaction and can affect multiple parts of the site.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers when they view encoded emails.

Potential impact on your site

04Site Impact

Site visitors may have their sessions hijacked, credentials stolen, or be redirected to malicious sites when viewing affected email content.

Conditions required to exploit

05Prerequisites

Attacker needs low-level site access (e.g., subscriber or contributor role) and the victim must view a page containing the malicious encoded email.

Key dates

06Disclosure timeline

November 22, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-47821 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html

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