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MEDIUM severity

Pandao Editor.md vulnerable to cross-site scripting (XSS) in iframe src parameterGHSA-w974-rq9x-mh3v

MEDIUMFix: pandao/editor.md#860

GHSA-w974-rq9x-mh3v is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in editor.md. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2020-19697
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-w974-rq9x-mh3v.

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%0.39%0.77%1.16%0.4%0.7%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

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.

6other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
editor.mdnpm
549downloads / week

Description

Cross-site Scripting vulnerability found in Pandao Editor.md v.1.5.0 allows a remote attacker to execute arbitrary code via a crafted script in the <iframe> src parameter.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmeditor.mdall versionsNo fix

Affected Products

1 product · 1 configurations
Application
editor.mdipandao
1 version
1.5.0
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.

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Remediation status

    The records we use list no patched version of editor.md for GHSA-w974-rq9x-mh3v. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  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

Cross-site Scripting vulnerability found in Pandao Editor.md v.1.5.0 allows a remote attacker to execute arbitrary code via a crafted script in the `<iframe> src` parameter.
O3 Security · Impact-Aware SCA

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Pandao Editor.md vulnerable to cross-site scripting (XSS)…