# Mattermost

> `LAB ONLY` | `AUTHORIZED TARGETS ONLY` | 自动生成索引

- 系统 ID: `mattermost`
- 分类: `platforms`
- 覆盖策略: `rolling-24m`
- 总案例数: `36`
- 近 30 天新增/更新: `24`
- 重点 Markdown 案例数: `36`
- 已实证(真实版本): `0`
- 已实证(synthetic): `0`
- 阻塞数: `0`
- 待人工/缺浏览器证据: `36`
- 最近渲染时间: `2026-04-01T09:21:04+00:00`

## 目标约束

- 适用目标类型: `lab-local, lab-public, authorized-third-party`
- 是否允许公网验证: `yes, but ownership or authorization is required`
- 授权前提: 资产归属可证明，或已取得书面/明确授权。
- 最小化验证方式: 最小化验证、只读探测、可审计回显、受控注入。
- 禁止场景: 无归属证明或无明确授权的公网目标；知名公共网站或与测试无关的第三方资产；会造成持久破坏、数据越权下载或不可回滚影响的动作

## 来源

- `official` [Mattermost Security Updates](https://mattermost.com/security-updates/) (mode=core)
- `official` [NVD Mattermost](https://nvd.nist.gov/vuln/search) (keyword=Mattermost; mode=core)
- `official` [Mattermost Security Updates JSON](https://securityupdates.mattermost.com/security_updates.json) (mode=core)
- `ecosystem-authority` [OSV Mattermost](https://osv.dev/) (mode=core)

## 案例列表

| 标题 | 严重度 | 案例状态 | 实证状态 | 实证方式 | 来源置信度 | 更新时间 | 案例页 |
|------|--------|----------|----------|----------|------------|----------|--------|
| Issue Identifier | `severity` | `generated` | `triage-manual` | `synthetic` | `official` | `Fix Release Date` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-issue-identifier.md) |
| Mattermost doesn't set permissions on downloaded bulk export | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-31T23:19:38.844657Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-3113.md) |
| Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-31T05:32:49.079377Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-27656.md) |
| Mattermost doesn't rate limit login requests, allowing DoS | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-31T05:31:41.869147Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-26233.md) |
| Mattermost fails to validate user's authentication method when processing account auth type switch | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:23.696710Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-22545.md) |
| Mattermost fails to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:08.125706Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2455.md) |
| Mattermost fails to properly enforce read permissions in search API endpoints | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:55:57.125165Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-24692.md) |
| Mattermost fails to use consistent error responses when handling the /mute command | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:15.398070Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-21386.md) |
| Mattermost fails to validate team-specific upload_file permissions | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:04.837800Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-4265.md) |
| Mattermost fails to limit the size of responses from integration action endpoints | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-26T21:11:03.241919Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2456.md) |
| Mattermost allows a removed team member to enumerate all public channels within a private team | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:02.455815Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2458.md) |
| Mattermost fails to filter invite IDs based on user permissions | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:08.610141Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2463.md) |
| Mattermost fails to preserve the redacted state of burn-on-read posts during deletion | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:01.583567Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2578.md) |
| Mattermost fails to properly handle very long passwords | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:03.732922Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-24458.md) |
| Mattermost allows attackers to spoof permalink embeds | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:18.286997Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-2457.md) |
| Mattermost fails to bound memory allocation when processing DOC files | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:18.467718Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-25780.md) |
| Mattermost fails to properly validate User-Agent header tokens | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-26T21:11:24.090883Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-25783.md) |
| Mattermost fails to bound memory allocation when processing PSD image files | `low` | `generated` | `triage-manual` | `synthetic` | `ecosystem-authority` | `2026-03-23T18:56:08.918090Z` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-26246.md) |
| MMSA-2026-00574 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-16` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00574.md) |
| MMSA-2026-00603 | `low` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-16` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00603.md) |
| MMSA-2026-00624 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-16` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00624.md) |
| MMSA-2026-00625 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-16` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00625.md) |
| MMSA-2026-00610 | `low` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-10` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00610.md) |
| MMSA-2026-00611 | `low` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-10` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00611.md) |
| MMSA-2026-00621 | `high` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-03-05` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00621.md) |
| MMSA-2025-00562 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2025-00562.md) |
| MMSA-2026-00584 | `low` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00584.md) |
| MMSA-2026-00589 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00589.md) |
| MMSA-2026-00593 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00593.md) |
| MMSA-2026-00594 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00594.md) |
| MMSA-2026-00598 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00598.md) |
| MMSA-2026-00599 | `high` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-24` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00599.md) |
| MMSA-2025-00566 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-23` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2025-00566.md) |
| MMSA-2026-00578 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-23` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00578.md) |
| MMSA-2026-00590 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-23` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00590.md) |
| MMSA-2026-00595 | `medium` | `generated` | `triage-manual` | `synthetic` | `official` | `2026-02-23` | [link](/Users/x/websafe/07-framework-security/platforms/mattermost/cases/mattermost-mmsa-2026-00595.md) |