CVE-2021-25034Public exploitNetwork attack vector

Browser script execution via unescaped shortcode parameters

Published Feb 28, 2022 · Updated Aug 3, 2024

Reflected XSS in WP User before 7.0 allows remote attackers to execute script in a visitor's browser through a crafted page URL. Pages embedding [wp_user] return the form_id and title query parameters without sanitizing or escaping them into HTML. A victim must follow the crafted URL, and the shortcode must be present; successful exploitation runs script in the site's origin.

CVSS severity6.1
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in WP User before 7.0 allows remote attackers to execute script in a visitor's browser through a crafted page URL. Pages embedding [wp_user] return the form_id and title query parameters without sanitizing or escaping them into HTML. A victim must follow the crafted URL, and the shortcode must be present; successful exploitation runs script in the site's origin.

The record

CVE
CVE-2021-25034
Published
Feb 28, 2022
Updated
Aug 3, 2024
Vendor
Prashant Walke
Product
WP User - Custom Registration Forms, Login and User Profile
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 28, 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=7.0 <7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Prashant Walke · WP User - Custom Registration Forms, Login and User Profileversion=7.0 <7.0

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/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 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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