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MEDIUM severity

XSS in svg2png (NPM package)GHSA-mpp5-2x55-49xw

MEDIUM

GHSA-mpp5-2x55-49xw is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in svg2png. 1 public exploit reference exists, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.

Also known asCVE-2020-11887
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs52th percentile — riskier than 52% of all scored CVEsHighest risk
0.00%0.40%0.80%1.20%0.3%0.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-mpp5-2x55-49xw by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

108other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
svg2pngnpm
19Kdownloads / week

Description

svg2png 4.1.1 allows XSS with resultant SSRF via JavaScript inside an SVG document.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmsvg2pngall versionsNo fix

Affected Products

1 product · 1 configurations
Application
svg2pngsvg2png_project
1 version
4.1.1
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

svg2png 4.1.1 allows XSS with resultant SSRF via JavaScript inside an SV…

github.comNVDApr 2020

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for svg2png, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    No patched version of svg2png has shipped for GHSA-mpp5-2x55-49xw yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

svg2png 4.1.1 allows XSS with resultant SSRF via JavaScript inside an SVG document.
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XSS in svg2png (NPM package) (Medium 6.1)