How severe is CVE-2022-0941?

CVE-2022-0941 has a CVSS score of 7.3/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-0941?

CVE-2022-0941 affects the following packages: showdoc/showdoc (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2022-0941?

Update showdoc/showdoc to 2.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0941 is resolved across your whole dependency graph.

How do I detect CVE-2022-0941 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-2022-0941 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-2022-0941 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2022-0941, including 1 in-the-wild exploitation 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-2022-0941?

CVE-2022-0941 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 50th 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-2022-0941?

CVE-2022-0941 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-2022-0941 published, and has it been updated?

CVE-2022-0941 was published on March 14, 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

HIGH severity

CVE-2022-0941 — showdoc

HIGHFix: star7th/showdoc@4b6e660

CVE-2022-0941 is a high-severity (CVSS 7.3) Cross-site Scripting (XSS) vulnerability in showdoc/showdoc. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for showdoc/showdoc — see the affected versions and patch details below.

Stored XSS due to Unrestricted File Upload in star7th/showdoc

Also known asGHSA-wg4r-q74r-p7c8

Published

Mar 14, 2022

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs50th percentile — riskier than 50% 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 vulnerable to stored cross-site scripting due to unrestricted file upload in versions 2.10.3 and prior. A patch is available and anticipated to be part of 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

≤ 2.10.3

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.

Stored XSS due to Unrestricted File Upload in GitHub repository star7th/…

huntr.devNVDMar 2022

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-2022-0941 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

ShowDoc is vulnerable to stored cross-site scripting due to unrestricted file upload in versions 2.10.3 and prior. A patch is available and anticipated to be part of version 2.10.4.

O3 Security · Impact-Aware SCA

Is CVE-2022-0941 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

7.3/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

Timeline

Disclosed

Mar 14, 2022

First exploit

Mar 18, 2022

4 days after disclosure — rapid exploitation

Last updated

Oct 28, 2026

Identifiers

CVE-2022-0941

GHSA-wg4r-q74r-p7c8

References

Advisorygithub.com · CVE 2022 0941.json Advisorynvd.nist.gov · CVE 2022 0941 Fixgithub.com · 4b6e6603c714aab1de346c5f5cb0bbb4c871be1f Webhuntr.dev · 040a910e e689 4fcb 9e4f 95206515d1bc Packagegithub.com · showdoc

Related vulnerabilities

This CVE is high severity; 2 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-2022-0967

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026