CVE-2025-27511
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedGeoServer is an open source server that allows users to share and edit geospatial data. Prior to version 2.27.0 of the GeoServer DB2 DataStore Extension, an administrator can perform a JNDI attack through specially crafted DB2 jdbc url leading to to Remote Code Execution (RCE). Version 2.27.0 fixes the issue.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA JNDI injection vulnerability exists in the GeoServer DB2 DataStore Extension prior to version 2.27.0. An attacker with administrator privileges can craft a malicious DB2 JDBC URL that enables JNDI lookup, leading to remote code execution (RCE).
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2.27.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm GeoServer installationLocate the GeoServer installation directory or check for geoserver.war in your application serverAffected if GeoServer is not installed, this CVE does not apply
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Identify DB2 DataStore Extension versionCheck the geoserver/extensions directory for the db2 datastore extension jar and note its version number from the filename or metadataAffected if The DB2 DataStore Extension is present with a version before 2.27.0 or no version is visible (implying older release)
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Verify DB2 datastore configurationExamine GeoServer configuration files (typically in data_directory/workspaces or through the web admin UI under Stores) for any configured DB2 data storesAffected if A DB2 datastore is configured, the vulnerable JDBC URL handling code is in use
You are affected if the DB2 DataStore Extension is installed with a version prior to 2.27.0, regardless of whether a DB2 store is currently configured, since the vulnerable code is present in the extension itself
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2.27.0
Upgrade the GeoServer DB2 DataStore Extension to version 2.27.0 or later to remediate this vulnerability.
2.27.0
- Locate and upgrade the GeoServer DB2 DataStore Extension to version 2.27.0 or later
- Ensure the GeoServer core is also upgraded to version 2.27.0 or later to maintain compatibility
- After upgrading, verify the version by checking the GeoServer "About & Status" page or the installed extensions
- Restart the GeoServer service to apply the changes
- Review DB2 DataStore configuration to ensure no malicious JNDI URLs are present
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,464.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-27511 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-27511 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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