CVE-2025-11857Network attack vector

Stored XSS via unsanitized shortcode post_id

Published Oct 18, 2025 · Updated Oct 18, 2025

Stored XSS in mxp XX2WP Integration Tools 1.9.9 and earlier allows remote authenticated users to inject scripts via a shortcode. The mxp_fb2wp_display_embed shortcode fails to sanitize the post_id parameter or escape it when generating page output. Contributor-level access is required to save the crafted shortcode, and the injected script executes whenever a visitor opens the affected page.

CVSS severity6.4
Medium
EPSS probability0.28%
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 mxp XX2WP Integration Tools 1.9.9 and earlier allows remote authenticated users to inject scripts via a shortcode. The mxp_fb2wp_display_embed shortcode fails to sanitize the post_id parameter or escape it when generating page output. Contributor-level access is required to save the crafted shortcode, and the injected script executes whenever a visitor opens the affected page.

The record

CVE
CVE-2025-11857
Published
Oct 18, 2025
Updated
Oct 18, 2025
Vendor
mxp
Product
XX2WP Integration Tools
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=* <=1.9.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

mxp · XX2WP Integration Toolsversion=* <=1.9.9

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 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')
T1059.007Command and Scripting Interpreter: JavaScript/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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