Security readout for executives and security teams
Plain-English summary
Mattermost Server before 3.0.0 had a System Console UI issue that could expose sensitive credential fields from config.json. The business risk is disclosure of secrets used by the collaboration platform. Public source data does not provide CVSS, affected deployment details, or confirmed exploitation.
Executive priority
Prioritize remediation for any internet-reachable or broadly accessible Mattermost deployment before 3.0.0. The absence of CVSS and KEV lowers certainty, but credential disclosure can create broader compromise risk.
Technical view
CVE-2016-11078 describes potential sensitive information disclosure through the Mattermost System Console UI. The exposed data is credential fields within config.json. The source bundle identifies Mattermost Server before 3.0.0 but does not clarify required privileges, exploit preconditions, or exact impacted credential types.
Likely exposure
Exposure is likely limited to organizations still running Mattermost Server before 3.0.0. Risk depends on who can reach the System Console UI, but the sources do not state whether authentication or admin privileges are required.
Exploitation context
No active exploitation is reported in the provided sources, and the CVE is not listed as KEV. The issue could matter if an attacker can access the vulnerable System Console UI and view credential fields.
Researcher notes
The public record is sparse: no CVSS vector, CWE, exploit preconditions, or patch notes are provided in the bundle. Treat the stated version boundary and System Console UI exposure as the reliable facts.
Mitigation direction
- Inventory Mattermost Server deployments and identify versions before 3.0.0.
- Check Mattermost security guidance before choosing the target upgrade version.
- Restrict System Console UI access to trusted administrators during assessment.
- Rotate config.json credentials if exposure is confirmed or strongly suspected.
Validation and detection
- Confirm each Mattermost instance version from trusted asset records.
- Review who can access the System Console UI in affected deployments.
- Check logs for unexpected System Console access where available.
- Verify upgraded instances no longer expose credential fields in the UI.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2016-11078 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://mattermost.com/security-updates/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.