CVE-2023-2304Network attack vector

Stored XSS via unescaped shortcode attributes

Published May 31, 2023 · Updated Apr 8, 2026

Stored XSS in Kyle Phillips Favorites for WordPress 2.3.2 and earlier allows remote authenticated users to inject scripts via shortcode attributes. The user_favorites shortcode accepts user-supplied attributes without sufficient input sanitization and emits them without adequate output escaping. Contributor-level access is required to save a crafted page, and the injected script executes whenever a user views that page.

CVSS severity6.4
Medium
EPSS probability0.69%
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 Kyle Phillips Favorites for WordPress 2.3.2 and earlier allows remote authenticated users to inject scripts via shortcode attributes. The user_favorites shortcode accepts user-supplied attributes without sufficient input sanitization and emits them without adequate output escaping. Contributor-level access is required to save a crafted page, and the injected script executes whenever a user views that page.

The record

CVE
CVE-2023-2304
Published
May 31, 2023
Updated
Apr 8, 2026
Vendor
Kyle Phillips
Product
Favorites for WordPress
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 31, 2023CVE 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 <=2.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kyle Phillips · Favorites for WordPressversion=0 <=2.3.2

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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.

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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