# Mattermost in September 2025: incidents, uptime and changes

> Mattermost in September 2025: 0 incidents on its status page (0 major or critical), 100% free of major or critical incidents (vendor-reported), 6 CVEs. From Rewindex’s archive of Mattermost’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/mattermost/2025/09
Last updated: 2026-10-19T17:10:00Z

- Incidents posted: 0 (major/critical: 0) · Maintenance: 0
- By vendor impact label: none
- Uptime (vendor-reported): 100% free of major/critical incidents, 100% free of any incident; outage time 0 min, incident time 0 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 6
- Previous month: [August 2025](https://rewindex.com/company/mattermost/2025/08.md) · Next: [October 2025](https://rewindex.com/company/mattermost/2025/10.md) · [All months](https://rewindex.com/company/mattermost/reports.md) · [Mattermost](https://rewindex.com/company/mattermost.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## All incidents

_No incidents posted this month._

## CVEs published

- [CVE-2025-9076](https://rewindex.com/cve/CVE-2025-9076.md) Mattermost Server exposes sensitive user credentials during shared channel membership synchronization (CVSS 6.5), published 2025-09-15
- [CVE-2025-9078](https://rewindex.com/cve/CVE-2025-9078.md) Weak cache keys lead to post IDOR and link preview poisoning (CVSS 4.3), published 2025-09-15
- [CVE-2025-9084](https://rewindex.com/cve/CVE-2025-9084.md) Open redirect in OAuth login (CVSS 3.1), published 2025-09-15
- [CVE-2025-9072](https://rewindex.com/cve/CVE-2025-9072.md) One-Click Mattermost Account Takeover via Poisoned RelayState SAML Parameter (CVSS 7.6), published 2025-09-15
- [CVE-2025-9079](https://rewindex.com/cve/CVE-2025-9079.md) Admin RCE via prepackaged plugins by way of misconfigured imports directory (CVSS 8.0), published 2025-09-19
- [CVE-2025-9081](https://rewindex.com/cve/CVE-2025-9081.md) IDOR in board file download allows any user to download any file by UUID (CVSS 3.1), published 2025-09-19

## Cite this

Mattermost posted 0 status incidents in September 2025 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/mattermost/2025/09
- Citation: Mattermost, “Mattermost in September 2025” (2025-09-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/mattermost/2025/09 (CC BY 4.0).
- Markdown link: `[Mattermost: Mattermost in September 2025 (2025-09-01)](https://rewindex.com/company/mattermost/2025/09)`


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Canonical: https://rewindex.com/company/mattermost/2025/09 · Markdown: https://rewindex.com/company/mattermost/2025/09.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:51:02.275Z