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MEDIUM severity

GHSA-m44f-9jhg-59cr — opencms-core

MEDIUMFix: alkacon/opencms-core@21bfbea

GHSA-m44f-9jhg-59cr is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in org.opencms:opencms-core. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.opencms:opencms-core — see the affected versions and patch details below.

alkacon-OpenCMS vulnerable to stored Cross-site Scripting

Also known asCVE-2023-31544
Published
May 16, 2023
Updated
Feb 16, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Sep 27, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-m44f-9jhg-59cr.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk

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

How urgent is this, really

GHSA-m44f-9jhg-59cr by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 379,842 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
☕org.opencms:opencms-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

A stored cross-site scripting (XSS) vulnerability in alkacon-OpenCMS v11.0.0.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Title field under the Upload Image module.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.opencms:opencms-coreall versions11.0.1org.opencms:opencms-core:11.0.1

Affected Products

1 product · 4 configurations
Application
opencmsalkacon
1 version
11.0
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 alkacon-OpenCMS v11…

github.comNVDMay 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.opencms:opencms-core to 11.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m44f-9jhg-59cr 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 alkacon-OpenCMS v11.0.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Title field under the Upload Image module.
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