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MEDIUM severity

CVE-2018-11198 — core

MEDIUM

CVE-2018-11198 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in mautic/core. A fix is available for mautic/core — see the affected versions and patch details below.

XSS vulnerability in Author URL of themes in Mautic

Also known asGHSA-xcf7-cj8q-pcjm
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 10, 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 CVEs59th percentile — riskier than 59% of all scored CVEsHighest risk
0.00%0.47%0.94%1.41%0.2%0.9%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2018-11198 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
🐘mautic/core

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

Impact

An XSS vulnerability was discovered in Mautic 2.13.1 in the Author URL of themes.

Patches

Update to 2.14 or later

Workarounds

None

References

https://github.com/mautic/mautic/releases/tag/2.14.0

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmautic/core≥ 2.13.1&&< 2.14.02.14.0composer require mautic/core:^2.14.0

Affected Products

1 product · 1 configurations
Application
mauticacquia
1 version
2.13.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update mautic/core to 2.14.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-11198 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

### Impact An XSS vulnerability was discovered in Mautic 2.13.1 in the Author URL of themes. ### Patches Update to 2.14 or later ### Workarounds None ### References https://github.com/mautic/mautic/releases/tag/2.14.0 ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]](mailto:[email protected])
O3 Security · Impact-Aware SCA

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CVE-2018-11198: core XSS — Fixed in 2.14.0