CVE-2022-43500Network attack vector

Stored script execution via unsanitized emailed posts

Published Dec 5, 2022 · Updated Apr 24, 2025

Stored XSS in WordPress before 6.0.3 allows remote attackers to run arbitrary script in a visitor's browser through Post by Email. wp-mail.php processed emailed post content under the current web user, allowing privileged sessions to bypass KSES filtering before storage. Exploitation requires Post by Email to be configured and a user to view the injected post, where the script runs within the site's browser origin.

CVSS severity6.1
Medium
EPSS probability0.75%
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 WordPress before 6.0.3 allows remote attackers to run arbitrary script in a visitor's browser through Post by Email. wp-mail.php processed emailed post content under the current web user, allowing privileged sessions to bypass KSES filtering before storage. Exploitation requires Post by Email to be configured and a user to view the injected post, where the script runs within the site's browser origin.

The record

CVE
CVE-2022-43500
Published
Dec 5, 2022
Updated
Apr 24, 2025
Vendor
WordPress.org
Product
WordPress
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=versions prior to 6.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WordPress.org · WordPressversion=versions prior to 6.0.3

Published CVSS scores

4.3JPCERT/CCAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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