CVE-2025-14144Network attack vector

Stored XSS via unescaped shortcode start attribute

Published Jan 7, 2026 · Updated Jan 7, 2026

Stored XSS in Mstoic Themes Mstoic Shortcodes 2.0 and earlier allows remote authenticated users to inject scripts through the start attribute. The ms_youtube_embeds shortcode handler accepts the start value without sufficient sanitization and emits it into YouTube embed markup without output escaping. Contributor-level access is required to store the payload in a page, and the script runs in the browser of each user who views that page.

CVSS severity6.4
Medium
EPSS probability0.27%
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 Mstoic Themes Mstoic Shortcodes 2.0 and earlier allows remote authenticated users to inject scripts through the start attribute. The ms_youtube_embeds shortcode handler accepts the start value without sufficient sanitization and emits it into YouTube embed markup without output escaping. Contributor-level access is required to store the payload in a page, and the script runs in the browser of each user who views that page.

The record

CVE
CVE-2025-14144
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Mstoic Themes
Product
Mstoic Shortcodes
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=* <=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mstoic Themes · Mstoic Shortcodesversion=* <=2.0

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.

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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