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MEDIUM severity

CVE-2020-15930 — joplin

MEDIUMFix: laurent22/joplin@57d750b

CVE-2020-15930 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in joplin. 2 public exploit references exist, so weaponization risk is real. A fix is available for joplin — see the affected versions and patch details below.

Cross-site Scripting in Joplin

Also known asGHSA-cgc7-mwp4-3ccx
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
4.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs91th percentile — riskier than 91% of all scored CVEsHighest risk
3.58%4.01%4.44%4.88%4.1%4.4%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-15930 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.

3other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
joplinnpm
1Kdownloads / week

Description

An XSS issue in Joplin desktop 1.0.190 to 1.0.245 allows arbitrary code execution via a malicious HTML embed tag.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmjoplin≥ 1.0.190&&< 1.1.71.1.7npm install joplin@1.1.7

Affected Products

1 product · 1 configurations
Application
joplinjoplin_project
≥ 1.0.190 && ≤ 1.0.245
range
Exploits & PoCs
2

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

EDB-48837webappsmultiple

Joplin 1.0.245 - Arbitrary Code Execution (PoC)

by Ademar Nowasky Junior · Sep 28, 2020

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update joplin to 1.1.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-15930 is resolved across your whole dependency graph.

  3. Workarounds

    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

An XSS issue in Joplin desktop 1.0.190 to 1.0.245 allows arbitrary code execution via a malicious HTML embed tag.
O3 Security · Impact-Aware SCA

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CVE-2020-15930: joplin RCE — Fixed in 1.1.7