CVE-2019-25225

`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.

Score

CVSS 3.1 6.1 Medium

Status

Analyzed - 596c5446-0ce5-4ba2-aa66-48b3b757a647

Published

2025-09-08

Last modified

2025-09-08

Weaknesses

CWE-79

Affected products

• Sanitize-html (Apostrophecms)

References

• https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2019/CVE-2019-25225
• https://github.com/apostrophecms/sanitize-html/commit/712cb6895825c8bb6ede71a16b42bade42abcaf3
• https://github.com/apostrophecms/sanitize-html/issues/293
• https://github.com/apostrophecms/sanitize-html/pull/156