GHSA-w8x4-x68c-m6fc
Fix: eKoopmans/html2pdf.js#877GHSA-w8x4-x68c-m6fc is a Cross-site Scripting (XSS) vulnerability in html2pdf.js. O3 Security confirms whether GHSA-w8x4-x68c-m6fc is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
html2pdf.js contains a cross-site scripting vulnerability
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
html2pdf.jsnpmDescription
Impact
html2pdf.js contains a cross-site scripting (XSS) vulnerability when given a text source rather than an element. This text is not sufficiently sanitized before being attached to the DOM, allowing malicious scripts to be run on the client browser and risking the confidentiality, integrity, and availability of the page's data.
Example attack vector:
import html2pdf from 'html2pdf.js/src/index.js';
const maliciousHTML = '<img src=x onerror="alert(document.cookie)">';
html2pdf(maliciousHTML);
// or html2pdf().from(maliciousHTML);
Patches
This vulnerability has been fixed in [email protected] to sanitize text sources using DOMPurify. There are no other breaking changes in this version.
Workarounds
Users of earlier versions of html2pdf.js must safely sanitize any text before using it as a source in html2pdf.js.
References
- Initial report: https://github.com/eKoopmans/html2pdf.js/issues/865
- Fix: https://github.com/eKoopmans/html2pdf.js/pull/877, v0.14.0
- CVE-2026-22787: https://nvd.nist.gov/vuln/detail/CVE-2026-22787
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | html2pdf.js | all versions | 0.14.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for html2pdf.js. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update html2pdf.js to 0.14.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w8x4-x68c-m6fc is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-w8x4-x68c-m6fc is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-w8x4-x68c-m6fc. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w8x4-x68c-m6fc in your dependencies?
O3 detects GHSA-w8x4-x68c-m6fc across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.