CVE-2026-6938
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 · uneditedIBM Db2 12.1.0 through 12.1.4 is vulnerable to authorization bypass when uploading to a remote object storage path with a special query.
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 · moderate confidenceIBM Db2 versions 12.1.0 through 12.1.4 contain an authorization bypass vulnerability in the remote object storage upload functionality. By crafting a special query when uploading to a remote object storage path, an authenticated attacker can bypass authorization checks and potentially access or manipulate data they should not have permission to access.
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>= 12.1.0, <= 12.1.4CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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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Check installed Db2 versionRun the 'db2level' command from a Db2 instance owner or query SELECT SERVICE_LEVEL FROM SYSIBMADM.ENVIRONMENT_INFOAffected if Version is 12.1.0, 12.1.1, 12.1.2, 12.1.3, or 12.1.4
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Identify remote object storage configurationQuery SYSIBMADM.DBCFG for configuration parameters containing OBJECT_STORAGE or run GET DATABASE MANAGER CONFIGURATION to search for remote object storage related settingsAffected if Remote object storage functionality is enabled or configured in Db2 settings
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Check upload procedure permissionsQuery SYSCAT.ROUTINEAUTH for EXECUTE privileges on routines related to object storage upload, or examine DBADM and ACCESSCTRL authority grants in SYSCAT.DBAUTHAffected if Users without full administrative authority have been granted execute permissions on object storage upload routines
The environment is affected if running Db2 version 12.1.0 through 12.1.4 with remote object storage upload functionality configured and accessible to authenticated users who should be restricted from that feature.
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.
From vendor dataApply the IBM Db2 patch for this vulnerability when available. Until then, restrict access to the remote object storage upload functionality to only trusted users and monitor for suspicious query patterns.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-6938 — 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-2026-6938 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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