CVE-2022-2351Public exploitNetwork attack vector

Stored XSS via unescaped temporary directory setting

Published Sep 16, 2022 · Updated Aug 3, 2024

Stored XSS in WPExperts Post SMTP before 2.1.4 allows remote authenticated users to execute script in another administrator's browser. The Temporary Directory setting is rendered into an HTML attribute in the administrator dashboard without output escaping, preserving injected event-handler markup. Administrator-level settings access and a dashboard visit by another user are required, exposing browser-accessible data and actions under that user's session.

CVSS severity4.8
Medium
EPSS probability0.66%
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 WPExperts Post SMTP before 2.1.4 allows remote authenticated users to execute script in another administrator's browser. The Temporary Directory setting is rendered into an HTML attribute in the administrator dashboard without output escaping, preserving injected event-handler markup. Administrator-level settings access and a dashboard visit by another user are required, exposing browser-accessible data and actions under that user's session.

The record

CVE
CVE-2022-2351
Published
Sep 16, 2022
Updated
Aug 3, 2024
Vendor
WPExperts
Product
Post SMTP
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=2.1.4 <2.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WPExperts · Post SMTPversion=2.1.4 <2.1.4

Published CVSS scores

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')
T1203Exploitation for Client Execution

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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