CVE-2023-3721Public exploitNetwork attack vector

Stored script execution via unsanitized text-link setting

Published Aug 14, 2023 · Updated May 5, 2025

Stored XSS in WP-EMail before 2.69.1 allows remote authenticated users with administrator access to execute scripts via a text-link setting. The Email Options page stores the E-Mail Text Link For Post value without adequate sanitization or output escaping, so a crafted style attribute and animation event execute when the page reloads. Administrator privileges are required; exposure is limited to multisite installations or sites with unfiltered_html disabled, and execution requires a user to load the stored page.

CVSS severity4.8
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in WP-EMail before 2.69.1 allows remote authenticated users with administrator access to execute scripts via a text-link setting. The Email Options page stores the E-Mail Text Link For Post value without adequate sanitization or output escaping, so a crafted style attribute and animation event execute when the page reloads. Administrator privileges are required; exposure is limited to multisite installations or sites with unfiltered_html disabled, and execution requires a user to load the stored page.

The record

CVE
CVE-2023-3721
Published
Aug 14, 2023
Updated
May 5, 2025
Vendor
Lester Chan
Product
WP-EMail
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 14, 2023CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.69.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Lester Chan · WP-EMailversion=0 <2.69.1

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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