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☕ Maven
Not in CISA KEV
HIGH severity

CVE-2019-11819 — opencms-core

HIGH

CVE-2019-11819 is a high-severity (CVSS 7.8) CWE-1236 vulnerability in org.opencms:opencms-core. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.opencms:opencms-core — see the affected versions and patch details below.

Alkacon OpenCMS CSV Injection via New User module

Also known asGHSA-q693-v7qf-p4xj
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs63th percentile — riskier than 63% of all scored CVEsHighest risk
0.00%0.50%1.00%1.50%0.2%1.0%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
☕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

Alkacon OpenCMS v10.5.4 and before is affected by CSV (aka Excel Macro) Injection in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp) via the First Name or Last Name.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.opencms:opencms-coreall versions11.0.0org.opencms:opencms-core:11.0.0

Affected Products

1 product · 1 configurations
Application
opencmsalkacon
≤ 10.5.4
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Alkacon OpenCMS v10.5.4 and before is affected by CSV (aka Excel Macro) …

openwall.comNVDAug 2020

Report on github.com

github.comNVDAug 2020

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 11.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-11819 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Alkacon OpenCMS v10.5.4 and before is affected by CSV (aka Excel Macro) Injection in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp) via the First Name or Last Name.
O3 Security · Impact-Aware SCA

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CVE-2019-11819: opencms-core — Fixed in 11.0.0