CVE-2016-11069
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 · uneditedAn issue was discovered in Mattermost Server before 3.2.0. It mishandles brute-force attempts at password change.
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 confidenceMattermost Server before version 3.2.0 contains a vulnerability where the password change mechanism improperly handles brute-force attempts, allowing attackers to potentially make unlimited guesses at passwords without proper rate limiting or account lockout protections.
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< 3.2.0CVSS 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
- 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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Determine installed Mattermost Server versionAccess the Mattermost System Console by logging in as an admin, then navigate to 'About' > 'Mattermost' to view the version number. Alternatively, check the server's config file (config.json) or run 'mattermost version' from the command line if you have CLI access.Affected if The installed version is any version prior to 3.2.0 (for example, 3.0.x, 3.1.x, or earlier).
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Verify password change functionality is accessibleConfirm that the password change feature is enabled in Mattermost. Navigate to 'Authentication' > 'Password' in the System Console and verify that users are permitted to change their passwords. Also ensure that the 'Enable Account Creation' setting is enabled.Affected if The password change feature is enabled and accessible to users, which is the default configuration in vulnerable versions.
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Check for brute-force protection configurationNavigate to 'Authentication' > 'Signle Sign-On' > 'MFA' or 'Security' > 'Password' in the System Console to inspect whether rate limiting or account lockout policies are configured for failed login or password change attempts.Affected if No rate limiting, account lockout, or brute-force protection is configured for password change attempts, leaving the vulnerability exploitable.
A user is affected if their Mattermost Server installation is version 3.1.x or earlier and the password change feature is accessible without proper brute-force protection configured.
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 data3.2.0
Upgrade Mattermost Server to version 3.2.0 or later to obtain the patch that implements proper brute-force protection for the password change functionality.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2016-11069 — 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-2016-11069 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
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