Mattermost: Security Vulnerabilities
Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which allows authenticated users to view contents of archived channels even when this is denied by system administrators by directly accessing the APIs.
CVSS Score
2.6
EPSS Score
0.002
Published
2022-01-18
Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.
CVSS Score
4.3
EPSS Score
0.006
Published
2022-01-18
Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.
CVSS Score
4.7
EPSS Score
0.002
Published
2022-01-18
Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure.
CVSS Score
4.3
EPSS Score
0.002
Published
2022-01-18
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.
CVSS Score
3.7
EPSS Score
0.002
Published
2021-12-17
Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which allows authenticated attackers to cause a client-side crash of the web application via a maliciously crafted post.
CVSS Score
3.5
EPSS Score
0.006
Published
2021-12-17
Mattermost 6.0.2 and earlier fails to sufficiently sanitize user's password in audit logs when user creation fails.
CVSS Score
5.8
EPSS Score
0.004
Published
2021-12-09
Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.
CVSS Score
3.7
EPSS Score
0.002
Published
2021-09-22
Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.
CVSS Score
7.1
EPSS Score
0.451
Published
2021-08-05
An issue was discovered in Mattermost Mobile Apps before 1.31.2 on iOS. Unintended third-party servers could sometimes obtain authorization tokens, aka MMSA-2020-0022.
CVSS Score
7.5
EPSS Score
0.003
Published
2020-06-26