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MEDIUM severity

Stored XSS in LavaLite 5.8.0GHSA-vv33-27jm-cvxq

MEDIUM

GHSA-vv33-27jm-cvxq is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in lavalite/cms. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for lavalite/cms — see the affected versions and patch details below.

Also known asCVE-2020-36395
Published
Updated
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 ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk
0.00%0.34%0.67%1.01%0.4%0.5%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
🐘lavalite/cms

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

A stored cross site scripting (XSS) vulnerability in the /admin/user/team component of LavaLite 5.8.0 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "New" parameter.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistlavalite/cmsall versions5.8.0composer require lavalite/cms:^5.8.0

Affected Products

1 product · 1 configurations
Application
lavalitelavalite
1 version
5.8.0
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.

A stored cross site scripting (XSS) vulnerability in the /admin/user/tea…

github.comNVDJul 2021

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update lavalite/cms to 5.8.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vv33-27jm-cvxq 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

A stored cross site scripting (XSS) vulnerability in the /admin/user/team component of LavaLite 5.8.0 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "New" parameter.
O3 Security · Impact-Aware SCA

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Stored XSS in LavaLite 5.8.0 (Medium 5.4)