Mattermost allows remote/synthetic users to create sessions, reset passwords
Published Aug 22, 2024 · Updated Oct 23, 2026 · Also known as GO-2024-3096, GHSA-c6vp-jjgv-38wj
Original summary
Normalized public record · Updated Oct 23, 2026
Mattermost allows remote/synthetic users to create sessions, reset passwords
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to ensure that remote/synthetic users cannot create sessions or reset passwords, which allows the munged email addresses, created by shared channels, to be used to receive email notifications and to reset passwords, when they are valid, functional emails.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- GO-2024-3096, GHSA-c6vp-jjgv-38wj
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Aug 22, 2024 · Last refreshed Oct 23, 2026