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Vulnerability record · CVE-2019-25225 · published 8 September 2025

CVE-2019-25225: Apostrophecms sanitize-html cross-site scripting vulnerability

Apostrophecms · Sanitize Html

`sanitize-html` prior to version 2.0.0-beta is vulnerable to Cross-site Scripting (XSS). The `sanitizeHtml()` function in `index.js` does not sanitize content when using the custom `transformTags` option, which is intended to convert attribute values into text. As a result, malicious input can be transformed into executable code.

6.1 CVSS 3.1 Medium EPSS 0.27% · top 82.9% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

`sanitize-html` prior to version 2.0.0-beta is vulnerable to Cross-site Scripting (XSS). The `sanitizeHtml()` function in `index.js` does not sanitize content when using the custom `transformTags` option, which is intended to convert attribute values into text. As a result, malicious input can be transformed into executable code.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2019/CVE-2019-25225 ExploitThird Party Advisory
https://github.com/apostrophecms/sanitize-html/commit/712cb6895825c8bb6ede71a16b42bade42abcaf3 Patch
https://github.com/apostrophecms/sanitize-html/issues/293 Issue TrackingVendor Advisory
https://github.com/apostrophecms/sanitize-html/pull/156 Issue TrackingPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-25225), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.