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HIGH severity

CVE-2022-0506 — microweber

HIGHFix: microweber/microweber@05d55f2

CVE-2022-0506 is a high-severity (CVSS 7.7) Cross-site Scripting (XSS) vulnerability in microweber/microweber. 1 public exploit reference exists, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.

Cross-site Scripting (XSS) - Stored in microweber/microweber

Also known asGHSA-jjvm-3mfq-7gc7
Published
Updated
Affected
1 pkg
Patched
See advisory
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 CVEs49th percentile — riskier than 49% of all scored CVEsHighest risk
0.00%0.38%0.75%1.13%0.2%0.2%0.6%0.6%0.6%May 26Aug 26Oct 26

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

How urgent is this, really

CVE-2022-0506 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 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

Cross-site Scripting (XSS) - Stored in Packagist microweber/microweber prior to 1.2.11.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistmicroweber/microweberall versionsNo fix

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.

Cross-site Scripting (XSS) - Stored in Packagist microweber/microweber p…

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. Remediation status

    No patched version of microweber/microweber has shipped for CVE-2022-0506 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    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

Cross-site Scripting (XSS) - Stored in Packagist microweber/microweber prior to 1.2.11.
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CVE-2022-0506: microweber XSS (High 7.7)