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MEDIUM severity

Microweber vulnerable to Improper Validation of Specified Quantity in InputGHSA-vpq7-m4qm-p2gp

MEDIUMFix: microweber/microweber@91a9d89

GHSA-vpq7-m4qm-p2gp is a medium-severity (CVSS 4.3) CWE-1284 vulnerability in microweber/microweber. 1 public exploit reference exists, so weaponization risk is real. A fix is available for microweber/microweber — see the affected versions and patch details below.

Also known asCVE-2022-0596
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 11, 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 CVEs48th percentile — riskier than 48% of all scored CVEsHighest risk
0.00%0.37%0.75%1.12%0.3%0.6%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-vpq7-m4qm-p2gp by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

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

Microweber prior to version 1.2.11 can have a negative product amount. This could allow an attacker to manipulate the total value and get products for free.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmicroweber/microweberall versions1.2.11composer require microweber/microweber:^1.2.11

Affected Products

1 product · 1 configurations
Application
microwebermicroweber
< 1.2.11
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.

Improper Validation of Specified Quantity in Input in Packagist microweb…

huntr.devNVDFeb 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 1.2.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vpq7-m4qm-p2gp is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

Microweber prior to version 1.2.11 can have a negative product amount. This could allow an attacker to manipulate the total value and get products for free.
O3 Security · Impact-Aware SCA

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Microweber vulnerable to Improper Validation of…