Vulnerabilities in Mattermost
512 resultsCVE-2023-2797LOWPath traversal in GitHub plugin's code preview featureEPSS 0.5%CVE-2024-3872LOWMattermost Mobile app versions 2.13.0 and earlier use a regular expression with polynomial complexity to parse certain deeplinks, which alloEPSS 0.5%CVE-2023-1562LOWFull name revealed via /plugins/focalboard/api/v2/usersEPSS 0.5%CVE-2023-7114HIGHMattermost version 2.10.0 and earlier fails to sanitize deeplink paths, which allows an attacker to perform CSRF attacks against the server.EPSS 0.5%CVE-2024-39832MEDIUMPermanently local data deletion by malicious remoteEPSS 0.5%CVE-2024-47401MEDIUMDoS via Amplified GraphQL Response in PlaybooksEPSS 0.5%CVE-2023-48732MEDIUMKeywords that trigger mentions are leaked to other usersEPSS 0.5%CVE-2026-9699MEDIUMMattermost Agents plugin logs unsanitized OpenAI API keys on authentication errorsEPSS 0.5%CVE-2026-93849MEDIUMMattermost allows authenticated users to trigger excessive memory allocation via crafted msgpack binary WebSocket framesEPSS 0.5%CVE-2024-39810MEDIUMServer crash via Elasticsearch certificate fileEPSS 0.5%CVE-2024-24774LOWMissing authorization allows users to access arbitrary security levels on Jira through webhooks (Jira Plugin)EPSS 0.5%CVE-2024-32046MEDIUMDetailed error discloses full file path with dev mode offEPSS 0.5%CVE-2023-1776HIGHStored XSS via SVG attachment on BoardsEPSS 0.4%CVE-2025-12421CRITICALAccount Takeover via Code Exchange EndpointEPSS 0.4%CVE-2025-20086MEDIUMInsufficient Input Validation on Post PropsEPSS 0.4%CVE-2024-2446MEDIUMMattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentioEPSS 0.4%CVE-2025-6233MEDIUMArbitrary file read by system admin via path traversalEPSS 0.4%CVE-2023-6202MEDIUMInsecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost BoardsEPSS 0.4%CVE-2024-54682MEDIUMZipbomb DoS via Missing Slack Import ValidationEPSS 0.4%CVE-2026-7521MEDIUMSAML certificate deletion allows path traversal to delete arbitrary files outside the config directoryEPSS 0.4%