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Not in CISA KEV
HIGH severity

CVE-2022-0930 — microweber

HIGHFix: microweber/microweber@33eb4cc

CVE-2022-0930 is a high-severity (CVSS 8) 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.

File upload filter bypass leading to stored XSS in microweber/microweber

Also known asGHSA-2cv6-6437-39p2
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs60th percentile — riskier than 60% of all scored CVEsHighest risk
0.00%0.47%0.94%1.41%0.5%0.9%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

File upload filter bypass leading to stored XSS in GitHub repository microweber/microweber prior to 1.2.12.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmicroweber/microweberall versions1.2.12composer require microweber/microweber:^1.2.12

Affected Products

1 product · 1 configurations
Application
microwebermicroweber
< 1.2.12
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.

File upload filter bypass leading to stored XSS in GitHub repository mic…

huntr.devNVDMar 2022

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 1.2.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-0930 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

File upload filter bypass leading to stored XSS in GitHub repository microweber/microweber prior to 1.2.12.
O3 Security · Impact-Aware SCA

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CVE-2022-0930: microweber XSS — Fixed in 1.2.12