GO-2026-4306 Mattermost Server has Insufficient Session Expiration when used as an OAuth 2.0 service provider in github.com/mattermost/mattermost-server

Mattermost Server has Insufficient Session Expiration when used as an OAuth 2.0 service provider in github.com/mattermost/mattermost-server...

GO-2026-4302 Mattermost Server vulnerable to XSS via an uploaded file in github.com/mattermost/mattermost-server

Mattermost Server vulnerable to XSS via an uploaded file in github.com/mattermost/mattermost-server...

GO-2026-4299 Mattermost Server allows attackers to log sensitive information via DEBUG REST API logging endpoint in github.com/mattermost/mattermost-server

Mattermost Server allows attackers to log sensitive information via DEBUG REST API logging endpoint in github.com/mattermost/mattermost-server...

GO-2026-4300 Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server

Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server...

GO-2026-4295 Mattermost Server exposes sensitive user status information via REST API version 4 endpoint in github.com/mattermost/mattermost-server

Mattermost Server exposes sensitive user status information via REST API version 4 endpoint in github.com/mattermost/mattermost-server...

GO-2026-4304 CVE-2017-18901 in github.com/mattermost/mattermost-server

CVE-2017-18901 in github.com/mattermost/mattermost-server...

CVE-2018-21263

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response...

CVE-2018-21254

An issue was discovered in Mattermost Server before 5.1. An attacker can bypass intended access control for direct-message channel creation via the Message slash command...

CVE-2018-21259

An issue was discovered in Mattermost Server before 4.10.1, 4.9.4, and 4.8.2. It allows attackers to cause a denial of service application hang via a malformed link in a channel...

CVE-2017-18879

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the authorlink field of a Slack attachment...

CVE-2017-18907

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. XSS could occur via a channel header...

CVE-2017-18880

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the titlelink field of a Slack attachment...

CVE-2017-18916

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. API endpoint access control does not honor an integration permission restriction...

CVE-2017-18871

An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, 4.3.4, and 4.2.2. It allows attackers to cause a denial of service application crash via an @ character before a JavaScript field name...

CVE-2017-18910

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. E-mail notifications can have spoofed links...

CVE-2017-18899

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting...

CVE-2017-18901

An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows attackers to discover a team invite ID by requesting a JSON document...

CVE-2017-18882

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS can occur via OpenGraph data...

CVE-2017-18909

An issue was discovered in Mattermost Server before 3.9.0 when SAML is used. Encryption and signature verification are not mandatory...

CVE-2017-18873

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to cause a denial of service channel invisibility via a misformatted post...