CVE-2021-24598Public exploitNetwork attack vector

Stored XSS via unescaped testimonial fields

Published Nov 17, 2021 · Updated Aug 3, 2024

Stored XSS in WPShopMart Testimonial Builder before 1.6.0 allows remote authenticated users to execute script in another user's browser. Testimonial field values are stored and later rendered without HTML escaping, so embedded script is interpreted as page content. Administrator-level access is required even when unfiltered_html is disabled, and a second user must view the crafted testimonial for execution.

CVSS severity4.8
Medium
EPSS probability0.68%
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 WPShopMart Testimonial Builder before 1.6.0 allows remote authenticated users to execute script in another user's browser. Testimonial field values are stored and later rendered without HTML escaping, so embedded script is interpreted as page content. Administrator-level access is required even when unfiltered_html is disabled, and a second user must view the crafted testimonial for execution.

The record

CVE
CVE-2021-24598
Published
Nov 17, 2021
Updated
Aug 3, 2024
Vendor
WPShopMart
Product
Testimonial Builder – Grid & Slider
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 17, 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=1.6.0 <1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WPShopMart · Testimonial Builder – Grid & Sliderversion=1.6.0 <1.6.0

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NVDCVSS: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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