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HIGH severity

GeoServer DB2 DataStore Extension has a JNDI Vulnerability via Store ConnectionGHSA-g628-r368-6vh7

HIGH

GHSA-g628-r368-6vh7 is a high-severity (CVSS 7.2) CWE-74 vulnerability in org.geoserver.extension:gs-db2. A fix is available for org.geoserver.extension:gs-db2 — see the affected versions and patch details below.

Also known asCVE-2025-27511
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-g628-r368-6vh7.

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs65th percentile — riskier than 65% of all scored CVEsHighest risk
0.08%0.58%1.08%1.57%0.6%1.1%Jul 26Oct 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.geoserver.extension:gs-db2

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

Summary

Administrator can perform JNDI attack through specially crafted DB2 jdbc url leading to Remote Code Execution (RCE).

Impact

If GeoServer has DB2 extension installed, this vulnerability can lead to executing arbitrary code.

Details

Authenticated users can access Vector Data Sources page to creating a new data store through db2 jdbc connection, performing JNDI attack due to unrestricted connection parameters, and then achieve RCE with deserialization of untrusted data.

Remediation

This issue has been fixed in this release: https://github.com/geoserver/geoserver/releases/tag/2.27.0.

References

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.geoserver.extension:gs-db2all versions2.27.0org.geoserver.extension:gs-db2:2.27.0

Affected Products

1 product · 1 configurations
Application
geoserverosgeo
< 2.27.0
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 org.geoserver.extension:gs-db2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.geoserver.extension:gs-db2 to 2.27.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-g628-r368-6vh7 is resolved across your whole dependency graph.

  3. Workarounds

    Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

## Summary Administrator can perform JNDI attack through specially crafted DB2 jdbc url leading to Remote Code Execution (RCE). ## Impact If GeoServer has DB2 extension installed, this vulnerability can lead to executing arbitrary code. ## Details Authenticated users can access Vector Data Sources page to creating a new data store through db2 jdbc connection, performing JNDI attack due to unrestricted connection parameters, and then achieve RCE with deserialization of untrusted data. ### Remediation This issue has been fixed in this release: https://github.com/geoserver/geoserver/releas
O3 Security · Impact-Aware SCA

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GeoServer DB2 DataStore Extension has a JNDI…