CVE-2026-3108— Terminal Escape Injection in mmctl Report Posts Command
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I. Basic Information for CVE-2026-3108
Vulnerability Information
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Vulnerability Title
Terminal Escape Injection in mmctl Report Posts Command
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to sanitize user-controlled post content in the mmctl commands terminal output which allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences that enable screen manipulation, fake prompts, and clipboard hijacking.. Mattermost Advisory ID: MMSA-2026-00599
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
转义、元或控制序列转义处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost存在安全漏洞，该漏洞源于未清理用户控制的帖子内容，可能导致攻击者通过特制消息操纵管理员终端。以下版本受到影响：11.2.2及之前的11.2.x版本、10.11.10及之前的10.11.x版本、11.4.0及之前的11.4.x版本和11.3.1及之前的11.3.x版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mattermost | Mattermost | 11.2.0 ~ 11.2.2 | - |
II. Public POCs for CVE-2026-3108
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2026-03-26 · 8 CVEs total
| CVE-2026-3112 | 6.8 MEDIUM | Arbitrary File Read via Advanced Logging Support Packet |
| CVE-2026-3114 | 6.5 MEDIUM | Zip Bomb Denial of Service via Unrestricted Archive Decompression |
| CVE-2026-4274 | 5.4 MEDIUM | Insufficient authorization in shared channel membership sync grants team-level access inst |
| CVE-2026-3113 | 5.0 MEDIUM | mmctl export download command doesn’t restrict permissions to created file to file owner |
| CVE-2026-3116 | 4.9 MEDIUM | Improper Input Validation in Zoom Plugin Webhook Handler |
| CVE-2026-3115 | 4.3 MEDIUM | Guest users can view group member IDs without respecting view restrictions |
| CVE-2026-3109 | 2.2 LOW | Missing timestamp validation in Zoom webhook handler |
IV. Related Vulnerabilities
Same product: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same vendor: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same weakness: CWE-150
- CVE-2026-41526
KCoreAddons 安全漏洞 - CVE-2026-6019
BaseCookie.js_output() does not neutralize embedded characte - CVE-2026-40505
MuPDF < 1.27 mutool ANSI Injection via Metadata - CVE-2026-26149
Microsoft Power Apps Desktop Client Spoofing Vulnerability - CVE-2026-35651
OpenClaw 2026.2.13 < 2026.3.25 - ANSI Escape Sequence Inject
V. Comments for CVE-2026-3108
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