Vulnerabilities in Mattermost

489 results
Vexday analysis

Com 434 CVEs catalogadas e nenhuma entrada confirmada no catálogo CISA KEV, o Mattermost apresenta taxa de exploração ativa abaixo da média geral do catálogo, o que indica risco operacional imediato relativamente contido. No entanto, o volume de 60 vulnerabilidades surgidas nos últimos 90 dias merece atenção, sinalizando um ritmo elevado de descoberta recente. A falha mais comum é CWE-863 (autorização incorreta), padrão que tende a permitir acesso não autorizado a recursos e funcionalidades, e que exige revisão cuidadosa de controles de acesso nas implementações. A CVE mais perigosa atualmente identificada, CVE-2025-25279, registra escore EPSS de 0,2081 — o mais alto observado no portfólio — e, embora ainda sem exploração confirmada, deve ser priorizada dado o risco potencial de aproveitamento próximo.

CVE-2026-6957HIGHPath traversal in Mattermost Legal Hold plugin via unsanitized file name from federated peer allows arbitrary file write.EPSS 0.3%CVE-2024-52032MEDIUMPrivate channel names leaking when Elasticsearch is enabledEPSS 0.3%CVE-2024-36492HIGHExisting local user overwritten by malicious remoteEPSS 0.3%CVE-2024-10241MEDIUMPrivate channel names leaked with Ctrl+K when ElasticSearch is enabledEPSS 0.3%CVE-2025-54463MEDIUMUnexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence PluginEPSS 0.3%CVE-2025-24526MEDIUMChannel export permitted on archived channel when viewing archived channels is disabledEPSS 0.3%CVE-2025-3228MEDIUMUnauthorized Guest user access to PlaybookEPSS 0.3%CVE-2023-3613LOWGuest accounts invited and added to channels by Welcomebot pluginEPSS 0.3%CVE-2025-55070MEDIUMLack of MFA enforcement in WebSocket connectionsEPSS 0.3%CVE-2024-42411MEDIUMUser creation date manipulation in POST /api/v4/usersEPSS 0.3%CVE-2026-3109LOWMissing timestamp validation in Zoom webhook handlerEPSS 0.3%CVE-2026-13426MEDIUMClient4 fails to validate path parametersEPSS 0.3%CVE-2025-24866LOWUnauthorized Access to User Activity Logs API by delegated granular administration rolesEPSS 0.3%CVE-2026-5139MEDIUMGitLab Plugin Allows Non-Admin Users to Modify Default Instance ConfigurationEPSS 0.3%CVE-2026-10085MEDIUMOrdinary group/direct message member can enable group_constrained and remove all channel participantsEPSS 0.3%CVE-2024-42000LOWUnauthorized Access to view channels' detailsEPSS 0.3%CVE-2025-12689MEDIUMDoS in Calls plugin via malformed UTF-8 in WebSocket requestEPSS 0.3%CVE-2026-25783MEDIUMDenial of service via malformed User-Agent header in getBrowserVersionEPSS 0.3%CVE-2024-39837LOWMalicious remote can create arbitrary channelsEPSS 0.3%CVE-2025-31363LOWData exfiltration via AI plugin Jira toolEPSS 0.3%