CVE-2022-4577Public exploitNetwork attack vector

Contributor-level stored XSS via unescaped shortcode attributes

Published Feb 6, 2023 · Updated Mar 26, 2025

Stored XSS in Easy Testimonials before 3.9.3 allows remote authenticated users to execute script through crafted shortcode attributes. The random_testimonial shortcode places the user-controlled body_class attribute into rendered page markup without validation or output escaping. Contributor-level access is sufficient to store the payload, which executes when a higher-privileged user views the testimonial.

CVSS severity5.4
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 Easy Testimonials before 3.9.3 allows remote authenticated users to execute script through crafted shortcode attributes. The random_testimonial shortcode places the user-controlled body_class attribute into rendered page markup without validation or output escaping. Contributor-level access is sufficient to store the payload, which executes when a higher-privileged user views the testimonial.

The record

CVE
CVE-2022-4577
Published
Feb 6, 2023
Updated
Mar 26, 2025
Vendor
ghuger
Product
Easy Testimonials
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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=0 <3.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ghuger · Easy Testimonialsversion=0 <3.9.3

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
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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