CVE-2019-25225Public exploitNetwork attack vector

Cross-site scripting via unescaped transformed text

Published Sep 8, 2025 · Updated Sep 8, 2025

Cross-site scripting in ApostropheCMS sanitize-html before 2.0.0-beta allows remote attackers to execute script via crafted HTML. The sanitizeHtml() path in index.js inserts transformTags-provided attribute values into frame.innerText without HTML escaping, so markup becomes executable output. Exploitation requires an application to use the custom transformTags option to turn attacker-controlled attributes into text and a user to render the sanitized result, exposing browser-accessible data or actions.

CVSS severity6.1
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

Cross-site scripting in ApostropheCMS sanitize-html before 2.0.0-beta allows remote attackers to execute script via crafted HTML. The sanitizeHtml() path in index.js inserts transformTags-provided attribute values into frame.innerText without HTML escaping, so markup becomes executable output. Exploitation requires an application to use the custom transformTags option to turn attacker-controlled attributes into text and a user to render the sanitized result, exposing browser-accessible data or actions.

The record

CVE
CVE-2019-25225
Published
Sep 8, 2025
Updated
Sep 8, 2025
Vendor
ApostropheCMS
Product
sanitize-html
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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 <2.0.0-beta

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ApostropheCMS · sanitize-htmlversion=0 <2.0.0-beta

Published CVSS scores

6.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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