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Not in CISA KEV
HIGH severity

Microweber vulnerable to unrestricted malicious uploadsGHSA-8h43-xg5g-9cj7

HIGHFix: microweber/microweber@0d279ac

GHSA-8h43-xg5g-9cj7 is a high-severity (CVSS 7.2) Unrestricted File Upload vulnerability in microweber/microweber. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for microweber/microweber — see the affected versions and patch details below.

Also known asCVE-2022-4732
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-8h43-xg5g-9cj7.

EPSS Exploitation Probability

via FIRST.org ↗
38.2%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk
0.00%16.5%32.9%49.4%1.1%38.2%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
🐘microweber/microweber

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

Unrestricted Upload of File with Dangerous Type in GitHub repository microweber/microweber prior to 1.3.2.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmicroweber/microweberall versions1.3.2composer require microweber/microweber:^1.3.2

Affected Products

1 product · 1 configurations
Application
microwebermicroweber
≤ 1.3.1
range
Exploits & PoCs
1

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

Unrestricted Upload of File with Dangerous Type in GitHub repository mic…

huntr.devNVDJan 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update microweber/microweber to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8h43-xg5g-9cj7 is resolved across your whole dependency graph.

  3. 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

Unrestricted Upload of File with Dangerous Type in GitHub repository microweber/microweber prior to 1.3.2.
O3 Security · Impact-Aware SCA

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Microweber vulnerable to unrestricted malicious uploads