GHSA-33vc-wfww-vjfv
MEDIUMjsondiffpatch is vulnerable to Cross-site Scripting (XSS) via HtmlFormatter::nodeBegin
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
jsondiffpatchnpmDescription
Vulnerability in jsondiffpatch
Versions of jsondiffpatch prior to 0.7.2 are vulnerable to Cross-site Scripting (XSS) in the HtmlFormatter (HtmlFormatter::nodeBegin). When diffs are rendered to HTML using the built-in formatter, untrusted payloads can inject scripts and execute in the context of a consuming web page.
Affected versions: >= 0, < 0.7.2 Patched version: 0.7.2
Remediation
Upgrade to jsondiffpatch 0.7.2 or later. The fix hardens the HTML formatter to avoid script injection.
Workarounds Avoid using the HTML formatter on untrusted diffs, or sanitize/escape the rendered output.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | jsondiffpatch | all versions | 0.7.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jsondiffpatch. 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 jsondiffpatch to 0.7.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-33vc-wfww-vjfv 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-33vc-wfww-vjfv 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-33vc-wfww-vjfv. 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-33vc-wfww-vjfv in your dependencies?
O3 detects GHSA-33vc-wfww-vjfv across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.