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MEDIUM severity

Stored Cross-site Scripting in showdocGHSA-3pg8-c473-w6rr

MEDIUMFix: star7th/showdoc@3caa323

GHSA-3pg8-c473-w6rr is a medium-severity (CVSS 6.9) Cross-site Scripting (XSS) vulnerability in showdoc/showdoc. 3 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for showdoc/showdoc — see the affected versions and patch details below.

Also known asCVE-2022-0967
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
3 known
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk
0.10%1.40%2.70%4.01%0.8%3.3%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
🐘showdoc/showdoc

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

ShowDoc is a tool for an IT team to share documents online. showdoc contains a stored cross-site scripting vulnerability in the File Library page when uploading a file in .ofd format in versions prior to 2.10.4. At this time, there is no known workaround. Users should update to version 2.10.4.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistshowdoc/showdocall versions2.10.4composer require showdoc/showdoc:^2.10.4

Affected Products

1 product · 1 configurations
Application
showdocshowdoc
< 2.10.4
range
Exploits & PoCs
3

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

EDB-50941webappsphp

Showdoc 2.10.3 - Stored Cross-Site Scripting (XSS)

by Akshay Ravi · May 17, 2022

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 showdoc/showdoc, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update showdoc/showdoc to 2.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3pg8-c473-w6rr 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

ShowDoc is a tool for an IT team to share documents online. showdoc contains a stored cross-site scripting vulnerability in the File Library page when uploading a file in .ofd format in versions prior to 2.10.4. At this time, there is no known workaround. Users should update to version 2.10.4.
O3 Security · Impact-Aware SCA

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Stored Cross-site Scripting in showdoc (Medium 6.9)