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MEDIUM severity

XSS in baserCMSGHSA-994g-74gq-5qpr

MEDIUM

GHSA-994g-74gq-5qpr is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in baserproject/basercms. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2018-0570
Published
Updated
Affected
2 pkgs
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk-0.01%
Lower risk than most CVEs52th percentile — riskier than 52% of all scored CVEsHighest risk
0.00%0.39%0.78%1.18%0.2%0.7%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

2 pkgs affected
🐘baserproject/basercms🐘baserproject/basercms

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 vulnerability in baserCMS (baserCMS 4.1.0.1 and earlier versions, baserCMS 3.0.15 and earlier versions) allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.

Affected Packages

2 total
EcosystemPackageVulnerable rangeFix
🐘Packagistbaserproject/basercms≥ 4.0.0No fix
🐘Packagistbaserproject/basercmsall versionsNo fix

Affected Products

1 product · 2 configurations
Application
basercmsbasercms
≥ 3.0.0 && ≤ 4.1.0.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    The records we use list no patched version of baserproject/basercms for GHSA-994g-74gq-5qpr. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  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 vulnerability in baserCMS (baserCMS 4.1.0.1 and earlier versions, baserCMS 3.0.15 and earlier versions) allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.
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XSS in baserCMS (Medium 5.4)