CVE-2023-47821: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jannis T

Q: How do I fix CVE-2023-47821?

email encoder: upgrade to newer than 2.1.8. Exact commands for each OS are on this page.

Q: Is CVE-2023-47821 being exploited?

CVE-2023-47821 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-47821 affect?

CVE-2023-47821 affects email encoder. Severity is medium (CVSS 6.5). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jannis Thuemmig Email Encoder plugin <= 2.1.8 versions.

Q: How urgent is CVE-2023-47821?

Priority 37/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2023-47821 is a medium-severity flaw (CVSS 6.5) affecting email encoder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-11-22
Last modified	2026-07-22

Publisher (CNA): Patchstack · Vendor: onlineoptimisation

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-11-22 23:15 UTCPublished CVE record published
2026-07-22 12:56 UTCUpdated Record last modified

onlineoptimisation email encoder UPGRADE

Affected: <= 2.1.8

Fixed in: newer than 2.1.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy email-encoder || rpm -q email-encoder || email-encoder --version

2. UPGRADE to newer than 2.1.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade email-encoder

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade email-encoder

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-47821?

email encoder: upgrade to newer than 2.1.8. Exact commands for each OS are on this page.

Is CVE-2023-47821 being exploited?

CVE-2023-47821 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-47821 affect?

CVE-2023-47821 affects email encoder. Severity is medium (CVSS 6.5). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jannis Thuemmig Email Encoder plugin <= 2.1.8 versions.

How urgent is CVE-2023-47821?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2024-1282 MEDIUM 6.4 UPGRADE The Email Encoder – Protect Email Addresses and Phone Numbers plugin for WordPress is vulnerable to Stored Cro
CVE-2023-7070 MEDIUM 6.4 UPGRADE The Email Encoder – Protect Email Addresses and Phone Numbers plugin for WordPress is vulnerable to Stored Cro
CVE-2024-4483 MEDIUM 5.4 UPGRADE The Email Encoder WordPress plugin before 2.2.2 does not escape the WP_Email_Encoder_Bundle_options[protectio
CVE-2023-4599 MEDIUM 6.4 UPGRADE The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' short

References

← Back to latest CVEs