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Unratedamended

Cross-site Scripting in Scratch-Svg-Renderer

CVE-2020-27428GHSA-h3vq-wv8j-36gw

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm scratch-svg-renderer

    Affected
    <= 0.2.0
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
not scored
EPSS
  • CVE-2020-27428: 0.67% estimated exploitation activity in the next 30 days; percentile 51.88 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

A DOM-based cross-site scripting (XSS) vulnerability in Scratch-Svg-Renderer v0.2.0 allows attackers to execute arbitrary web scripts or HTML via a crafted sb3 file.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-h3vq-wv8j-36gw

  2. Revision 1 · created ·

    Published from osv record GHSA-h3vq-wv8j-36gw

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2020-27428

Advisory: Cross-site Scripting in Scratch-Svg-Renderer
IDs: CVE-2020-27428, GHSA-h3vq-wv8j-36gw
Record: https://patchnext.com/advisories/cve-2020-27428 (revision 2, source checked 26 Oct 2026, 12:21 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm scratch-svg-renderer: affected <= 0.2.0

## Suggested inspection (read-only)
- `npm ls scratch-svg-renderer --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on scratch-svg-renderer.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-h3vq-wv8j-36gw (OSV record GHSA-h3vq-wv8j-36gw lists affected ranges: npm scratch-svg-renderer >=0 <=0.2.0)
- Verified: https://github.com/advisories/GHSA-h3vq-wv8j-36gw (GitHub-reviewed advisory GHSA-h3vq-wv8j-36gw lists affected ranges: npm scratch-svg-renderer >=0 <=0.2.0)

Commands are suggestions: review each one before running it.

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