Cross-Site Scripting in dompurify
Versions of dompurify prior to 2.0.3 are vulnerable to Cross-Site Scripting (XSS). The package has an XSS filter bypass due to Mutation XSS in both Chrome and Safari through a combination of <svg>/<math> elements and </p>/</br>. An example payload is: <svg></p><style><a id="</style><img src=1 onerror=alert(1)>">. This allows attackers to bypass the XSS protection and execute arbitrary JavaScript in a victim's browser.
Recommendation
Upgrade to version 2.0.3 or later. You may also disallow <svg> and <math> through dompurify configurations:
FORBID_TAGS: ['svg', 'math']
});```Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | dompurify | < 2.0.3 | 2.0.3 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- npm
- Package
dompurify- Disclosed
- 28.08.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-chqj-j4fh-rw7m - CC BY 4.0
Vulnerability history: dompurify
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 30
- First → latest
- 08.2020 10.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 3
- Medium 19
- Low 6
Disclosures per year
- 2020: 3
- 2021: 0
- 2022: 0
- 2023: 1
- 2024: 3
- 2025: 1
- 2026: 22
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