CVE-2024-8989Network attack vector

Contributor-level stored XSS via unescaped shortcode attributes

Published Oct 1, 2024 · Updated Apr 8, 2026

Stored XSS in Premio Stars Testimonials 3.3.1 and earlier allows remote authenticated users to inject scripts through shortcode attributes. The stars_testimonials shortcode processes user-supplied attributes without sufficient input sanitization or output escaping, storing markup that executes when the affected page is viewed. Contributor-level access is required to inject the payload; execution occurs in a visitor's browser and can affect data or actions available to that session.

CVSS severity6.4
Medium
EPSS probability0.34%
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 Premio Stars Testimonials 3.3.1 and earlier allows remote authenticated users to inject scripts through shortcode attributes. The stars_testimonials shortcode processes user-supplied attributes without sufficient input sanitization or output escaping, storing markup that executes when the affected page is viewed. Contributor-level access is required to inject the payload; execution occurs in a visitor's browser and can affect data or actions available to that session.

The record

CVE
CVE-2024-8989
Published
Oct 1, 2024
Updated
Apr 8, 2026
Vendor
Premio
Product
Stars Testimonials
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=3.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Premio · Stars Testimonialsversion=0 <=3.3.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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