CVE-2022-4459Public exploitNetwork attack vector

Stored XSS via unescaped shortcode wrapper attributes

Published Feb 6, 2023 · Updated Mar 26, 2025

Stored XSS in EDGE22 Studios Ltd. WP Show Posts before 1.1.4 allows remote authenticated users to inject scripts through shortcode settings. The settings parser merges attacker-controlled values and emits wrapper attributes into page markup without adequate validation or output escaping. Contributor access is sufficient to save the payload; script execution occurs when a viewing user previews the post and interacts with the injected element.

CVSS severity5.4
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 EDGE22 Studios Ltd. WP Show Posts before 1.1.4 allows remote authenticated users to inject scripts through shortcode settings. The settings parser merges attacker-controlled values and emits wrapper attributes into page markup without adequate validation or output escaping. Contributor access is sufficient to save the payload; script execution occurs when a viewing user previews the post and interacts with the injected element.

The record

CVE
CVE-2022-4459
Published
Feb 6, 2023
Updated
Mar 26, 2025
Vendor
EDGE22 Studios Ltd.
Product
WP Show Posts
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 <1.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

EDGE22 Studios Ltd. · WP Show Postsversion=0 <1.1.4

Published CVSS scores

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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