How severe is CVE-2022-1034?

CVE-2022-1034 has a CVSS score of 9.1/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-1034?

CVE-2022-1034 affects the following packages: showdoc/showdoc (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2022-1034?

Update showdoc/showdoc to 2.10.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-1034 is resolved across your whole dependency graph.

How do I detect CVE-2022-1034 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-2022-1034 if there is no patch (or I can't update yet)?

Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Is CVE-2022-1034 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2022-1034, 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-2022-1034?

CVE-2022-1034 has an EPSS (Exploit Prediction Scoring System) score of 1.5%, placing it in the 74th 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-2022-1034?

CVE-2022-1034 is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2022-1034 published, and has it been updated?

CVE-2022-1034 was published on March 22, 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

CRITICAL severity

CVE-2022-1034 — showdoc

CRITICALFix: star7th/showdoc@bd792a8

CVE-2022-1034 is a critical-severity (CVSS 9.1) Unrestricted File Upload 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.

There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in star7th/showdoc

Also known asGHSA-xp82-jmw8-mjxp

Published

Mar 22, 2022

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs74th percentile — riskier than 74% 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

There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in GitHub repository star7th/showdoc prior to 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.

There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 …

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-2022-1034 is resolved across your whole dependency graph.
Workarounds
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in GitHub repository star7th/showdoc prior to 2.10.4.

O3 Security · Impact-Aware SCA

Is CVE-2022-1034 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

9.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-434Unrestricted File Upload

Weaponization

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

OpenSSF Scorecard

Package health score

showdoc

4.3/10

Code-Review1/10

Maintained10/10

Branch-Protection0/10

Assessed Oct 26, 2026

Timeline

Disclosed

Mar 22, 2022

First exploit

Mar 28, 2022

7 days after disclosure — rapid exploitation

Last updated

Oct 28, 2026

Identifiers

CVE-2022-1034

GHSA-xp82-jmw8-mjxp

References

Advisorygithub.com · CVE 2022 1034.json Advisorynvd.nist.gov · CVE 2022 1034 Fixgithub.com · bd792a89c0325836fbd64784f4c4117c0171416b Webhuntr.dev · d205c489 3266 4ac4 acb7 c8ee570887f7 Packagegithub.com · showdoc

Related vulnerabilities

This CVE is critical severity; 1 of 8 other CVEs affecting showdoc/showdoc is rated as high or higher (top: critical).

CVE-2026-6982CVE-2025-0520CVE-2018-16342CVE-2018-19621CVE-2018-19609CVE-2018-19620CVE-2022-0967CVE-2022-0942

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026

CVE-2022-1034 — 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-2022-1034 in your dependencies?