CVE-2024-4305Public exploitNetwork attack vector

Stored XSS via unescaped filterMobileText option

Published Jun 17, 2024 · Updated Aug 1, 2024

Stored XSS in the WPXPO PostX plugin before 4.1.0 allows remote authenticated users to execute scripts through a crafted block option. The post-grid-3 renderer places filterMobileText into page markup without sufficient validation or output escaping, permitting an injected event handler. Contributor access is required to save the block, and execution occurs when another user previews or views the post; CISA separately lists Editor Blocks by Download Manager, whose release history does not align with the 4.1.0 boundary.

CVSS severity6.8
Medium
EPSS probability0.43%
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 the WPXPO PostX plugin before 4.1.0 allows remote authenticated users to execute scripts through a crafted block option. The post-grid-3 renderer places filterMobileText into page markup without sufficient validation or output escaping, permitting an injected event handler. Contributor access is required to save the block, and execution occurs when another user previews or views the post; CISA separately lists Editor Blocks by Download Manager, whose release history does not align with the 4.1.0 boundary.

The record

CVE
CVE-2024-4305
Published
Jun 17, 2024
Updated
Aug 1, 2024
Vendor
WPXPO
Product
PostX
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPXPO · PostXversion=0 <4.1.0
W3 Eden, Inc. · Editor Blocks by Download Managerversion=0 <4.1.0

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L

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-79Cross-Site Scripting (XSS)
T1059.007Command and Scripting Interpreter: JavaScript/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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