CVE-2016-1219
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 · uneditedCybozu Garoon before 4.2.2 allows remote attackers to bypass login authentication via vectors related to API use.
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 confidenceCybozu Garoon before version 4.2.2 contains an authentication bypass vulnerability in its API functionality that allows remote attackers to bypass login authentication. This critical flaw affects the web API layer and can be exploited without requiring any valid credentials.
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<= 4.2.1CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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 Cybozu Garoon is presentReview system inventory, running processes, or look for Garoon installation directories on the serverAffected if Cybozu Garoon software is installed on the system
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Determine the installed Garoon versionAccess the Garoon admin interface and navigate to system information, or check version files in the installation directory. The version is often visible in the login page footer or via /g/apiportal pathAffected if Version cannot be determined or is displayed as 4.2.1 or earlier
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Compare version against affected rangeIf a version number is obtained, verify it falls within the affected range: any version <= 4.2.1 is vulnerableAffected if Installed version is 4.2.1 or any version listed as below 4.2.2
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Assess API exposureCheck if Garoon API endpoints (such as /g/api or /scripts/garoon/api/) are network-accessible. Verify whether these endpoints require valid authentication tokensAffected if API layer is exposed to network and accepts requests without requiring valid login credentials
The environment is affected if Cybozu Garoon version 4.2.1 or earlier is running and its web API layer is accessible without authentication enforcement.
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 · scopedUpgrade Cybozu Garoon to version 4.2.2 or later to address the authentication bypass. If immediate patching is not possible, restrict network access to the Garoon API endpoints as a temporary compensating control.
Garoon 4.2.2
- Create a complete backup of the Garoon installation and database before proceeding with the upgrade
- Review the release notes and migration guide for Garoon 4.2.2 to understand any specific requirements
- Upgrade Cybozu Garoon from version 4.2.1 or earlier to version 4.2.2 or later
- After upgrading, verify that user authentication is functioning correctly across all login methods
- Test API functionality to confirm the authentication bypass vulnerability has been remediated
- Verify that all users can successfully log in and access their respective functions
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-1219 — 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-2016-1219 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data