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Mattermost Server

mattermost_server

Vendor: Mattermost • 452 CVEs

CVEs (452)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. SSRF can attack local services.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. The Markdown library allows catastrophic backtracking.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
4.3 MEDIUM· v3
4.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.10.0. An attacker can bypass the intended appearance of the Edited flag after changing a post's file ID.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.10.0, 5.9.1, 5.8.2, and 4.10.9. A non-member could change the Update/Patch Channel endpoint for a private channel.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.11.0. Invite IDs were improperly generated.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.11.0. An attacker can interfere with a channel's post loading via one crafted post.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.12.0. Use of a Proxy HTTP header, rather than the source address in an IP packet header, for obtaining IP address information was mishandled.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.12.0, 5.11.1, 5.10.2, 5.9.2, and 4.10.10. The login page allows CSRF.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.13.0. Incoming webhook creation is not properly restricted.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.13.0. Non-members may fetch a team's slash commands.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.15.0. Login access control can be bypassed via crafted input.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.15.0. It allows attackers to cause a denial of service (CPU consumption) via crafted characters in a SQL LIKE clause to an APIv4 endpoint.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.16.0. It allows attackers to cause a denial of service (markdown renderer hang) via many backtick characters.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.17.0. It allows remote attackers to cause a denial of service (client-side application crash) via a LaTeX message.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
6.5 MEDIUM· v3
4.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.19.0. Attackers can rename a channel and cause a collision with a direct message, aka MMSA-2020-0002.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the "get channel by name" API, aka MMSA-2020-0004.
1Mattermost
1Mattermost Server
Jun 17, 2026
Jun 19, 2020
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the update_team WebSocket event, aka MMSA-2020-0012.