How severe is CVE-2022-0967?

CVE-2022-0967 has a CVSS score of 6.9/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2022-0967?

CVE-2022-0967 affects the following packages: showdoc/showdoc (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2022-0967?

Update showdoc/showdoc to 2.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0967 is resolved across your whole dependency graph.

How do I detect CVE-2022-0967 in my Packagist dependencies?

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.

How do I mitigate CVE-2022-0967 if there is no patch (or I can't update yet)?

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.

Is CVE-2022-0967 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2022-0967, including 1 documented proof-of-concept exploit on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2022-0967?

CVE-2022-0967 has an EPSS (Exploit Prediction Scoring System) score of 3.3%, placing it in the 88th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2022-0967?

CVE-2022-0967 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2022-0967 published, and has it been updated?

CVE-2022-0967 was published on March 15, 2022 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

CVE-2022-0967 — showdoc

MEDIUMFix: star7th/showdoc@3caa323

CVE-2022-0967 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.

Stored XSS via File Upload in star7th/showdoc in star7th/showdoc in star7th/showdoc

Also known asGHSA-3pg8-c473-w6rr

Published

Mar 15, 2022

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

3 known

Exploitation data as of Nov 6, 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

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

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`showdoc/showdoc`	all versions	2.10.4`composer require showdoc/showdoc:^2.10.4`

Affected Products

1 product · 1 configurations

Application

showdocshowdoc

< 2.10.4

range

Exploits & PoCs

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

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.
Fix
Update showdoc/showdoc to 2.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0967 is resolved across your whole dependency graph.
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

O3 Security · Impact-Aware SCA

Is CVE-2022-0967 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.9/10CVSS v3 base

Vector breakdown

Attack Vector

Physical

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template or Metasploit module yet. 3 public proof-of-concept references are listed on this page.

Timeline

Disclosed

Mar 15, 2022

First exploit

May 17, 2022

Last updated

Oct 28, 2026

Identifiers

CVE-2022-0967

GHSA-3pg8-c473-w6rr

References

Advisorygithub.com · CVE 2022 0967.json Advisorynvd.nist.gov · CVE 2022 0967 Fixgithub.com · 3caa32334db0c277b84e993eaca2036f5d1dbef8 Webpacketstormsecurity.com · Showdoc 2.10.3 Cross Site Scripting Webhuntr.dev · 9dea3c98 7609 480d 902d 149067bd1e2a Packagegithub.com · showdoc

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs affecting showdoc/showdoc are rated as high or higher (top: critical).

CVE-2026-6982CVE-2025-0520CVE-2018-16342CVE-2018-19621CVE-2018-19609CVE-2018-19620CVE-2022-1034CVE-2022-0942

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2022-0967 — showdoc

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2022-0967 in your dependencies?