CVE-2021-24450Public exploitNetwork attack vector

Stored XSS via unescaped endpoint settings

Published Aug 2, 2021 · Updated Aug 3, 2024

Stored XSS in ProfilePress before 3.1.8 allows remote authenticated users with administrator privileges to execute JavaScript in visitors' browsers. The Edit Account Endpoint and Change Password Endpoint settings accept script-bearing values without sanitization or escaping, persist them, and render them into a page. An administrator can plant the payload even when unfiltered_html is disabled; execution requires another user to view the affected page.

CVSS severity4.8
Medium
EPSS probability0.65%
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 ProfilePress before 3.1.8 allows remote authenticated users with administrator privileges to execute JavaScript in visitors' browsers. The Edit Account Endpoint and Change Password Endpoint settings accept script-bearing values without sanitization or escaping, persist them, and render them into a page. An administrator can plant the payload even when unfiltered_html is disabled; execution requires another user to view the affected page.

The record

CVE
CVE-2021-24450
Published
Aug 2, 2021
Updated
Aug 3, 2024
Vendor
ProfilePress Membership Team
Product
ProfilePress
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 2, 2021CVE 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=3.1.8 <3.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ProfilePress Membership Team · ProfilePressversion=3.1.8 <3.1.8

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/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/JScript

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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