CVE records

Every CVE as the CVE Program publishes it, refreshed every ten minutes, with NVD's analysis, CISA's known-exploited status and a healthcare tag. Subscribers get the CVEs that match their own systems on My program, by email as they are published. Where the data comes from: sources.

Updated under an hour ago ()

What this means for you

This week: 5,468 CVEs published, 357 critical, and 7 newly confirmed exploited. Add your stack to see whether any of them hit you.

Published in the last 7 days
5,468
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Critical, last 7 days
357
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Healthcare-tagged, last 7 days
4
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Known exploited (CISA KEV)
1,747
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Showing CVEs that name the product mattermost:mattermost. Show all products

52 CVEs, showing 1 to 50Page 1 of 2Next
CVESeverityTitlePublished
CVE-2026-24661Medium 6.5Mattermost Plugins versions <=2.1.3.0 fail to limit the request body size on the {{/changes}} webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service…Apr 9, 2026
CVE-2026-14298Medium 6.5Boards archive import endpoint allows resource exhaustion via zip bomb and file size limit bypass in Mattermost
Assigned by Mattermost
Aug 13, 2026
CVE-2026-16048Medium 6.3Channel member roles accept out-of-scope roles
Assigned by Mattermost
Aug 17, 2026
CVE-2026-16046Low 3.5Missing run-state validation on finished playbook runs
Assigned by Mattermost
Aug 17, 2026
CVE-2026-16047Medium 4.3Board channel linking without read channel permission validation
Assigned by Mattermost
Aug 17, 2026
CVE-2026-16049Low 3.9_GitLab Plugin allows cross-channel post injection and phishing via missing channel permission checks in issue API endpoints_
Assigned by Mattermost
Aug 17, 2026
CVE-2026-16045Low 2.7Delegated OAuth tokens could revoke unrelated OAuth application authorizations
Assigned by Mattermost
Aug 17, 2026
CVE-2026-16044Low 3.9Insufficient validation of guest board admin privileges on archive import
Assigned by Mattermost
Aug 17, 2026
CVE-2026-15754Medium 4.2Missing per-channel team-scope check in ABAC access control policy unassign allows cross-team policy removal
Assigned by Mattermost
Aug 17, 2026
CVE-2026-10527Medium 6.3Boards plugin retains Board Admin rights for users demoted to System Guest
Assigned by Mattermost
Aug 17, 2026
CVE-2026-10080Medium 6.5Boards plugin panics on WebSocket command with non-string field types
Assigned by Mattermost
Aug 17, 2026
CVE-2026-9816High 8.3Insufficient server-side validation of board member role fields permits privilege escalation
Assigned by Mattermost
Aug 17, 2026
CVE-2026-9859Medium 6.5Mattermost Boards plugin didn’t enforce role-based authorization on board channel link allowing board editors to expose boards to arbitrary channels
Assigned by Mattermost
Aug 17, 2026
CVE-2026-9693Low 3.5Mattermost thread memberships persist after team removal, exposing private channel thread metadata on re-invite
Assigned by Mattermost
Aug 17, 2026
CVE-2026-75587Low 3.6Plaintext pre-auth secret exposure via Desktop App diagnostics report
Assigned by Mattermost
Aug 17, 2026
CVE-2026-14259Medium 4.3Board archive import bypasses team board creation permissions
Assigned by Mattermost
Sep 14, 2026
CVE-2026-11993Medium 4.3Fix authenticated members disabling file content indexing server-wide via extraction pool exhaustion
Assigned by Mattermost
Sep 14, 2026
CVE-2026-12882Medium 4.3Mattermost Markdown autolink parsing denial of service
Assigned by Mattermost
Sep 14, 2026
CVE-2026-14344Medium 4.3Inconsistent authorization checks in Mattermost Boards endpoints
Assigned by Mattermost
Sep 14, 2026
CVE-2026-10542Medium 5.0Playbooks channel action update validation issue
Assigned by Mattermost
Sep 14, 2026
CVE-2026-15814Medium 6.5Uploading a crafted image causes excessive memory allocation in the Mattermost Server
Assigned by Mattermost
Sep 14, 2026
CVE-2026-5132Medium 6.5Unbounded zlib decompression in Calls SDP WebSocket messages
Assigned by Mattermost
Sep 14, 2026
CVE-2026-8821High 7.1Playbooks run owner channel membership permission bypass
Assigned by Mattermost
Sep 14, 2026
CVE-2026-9812Medium 6.5Missing property field ownership validation in Playbooks run property update endpoint
Assigned by Mattermost
Sep 14, 2026
CVE-2026-13417Medium 4.3Boards plugin denial of service via unvalidated block fields.properties
Assigned by Mattermost
Sep 14, 2026
CVE-2026-10556Medium 5.3Unauthenticated webhook request with null notification entry could crash the Microsoft Calendar plugin.
Assigned by Mattermost
Sep 14, 2026
CVE-2026-86349Medium 4.3Mattermost Server Algorithmic DoS via Unbounded Markdown Block Nesting
Assigned by Mattermost
Sep 14, 2026
CVE-2026-86348Medium 4.3MS Calendar plugin: unrecovered handler panics from malformed post-action requests could crash the plugin process
Assigned by Mattermost
Sep 14, 2026
CVE-2026-82920Medium 5.5Mattermost ABAC parent policy bypass via policy update endpoint
Assigned by Mattermost
Sep 14, 2026
CVE-2026-12985Medium 6.8Mattermost DCR redirect URI allowlist bypass via improper URL component validation
Assigned by Mattermost
Sep 14, 2026
CVE-2026-91181Medium 6.5Data Retention Teams Endpoint Leaks Private Team Invite ID
Assigned by Mattermost
Sep 14, 2026
CVE-2026-75025Medium 4.7Mattermost Desktop local network access from server-rendered content
Assigned by Mattermost
Sep 16, 2026
CVE-2026-75588Low 2.6Mattermost Desktop App plugin popout scheme validation bypass
Assigned by Mattermost
Sep 17, 2026
CVE-2026-12284Low 3.8Mattermost Desktop App Missing IPC Sender Validation in Calls Leave Handler
Assigned by Mattermost
Sep 17, 2026
CVE-2026-95666Medium 4.3Unbounded post ID array in the bulk reactions endpoint allows denial of service
Assigned by Mattermost
Sep 22, 2026
CVE-2026-96259Medium 5.5Mattermost server-side request forgery via OAuth endpoints configurable by a System Administrator
Assigned by Mattermost
Sep 22, 2026
CVE-2026-96260Medium 6.5Mattermost server missing request body size limit on plugin routes allows denial of service by an authenticated user
Assigned by Mattermost
Sep 22, 2026
CVE-2026-19541Medium 6.5Outgoing OAuth connection client secret exposure during connection validation
Assigned by Mattermost
Oct 16, 2026
CVE-2026-18551Medium 6.5Mattermost guest account privilege escalation via member roles API
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19601Medium 4.9Disclosure of AD/LDAP bind password via Test Connection
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19867Medium 4.3Uncapped mention keys in user notification properties allow CPU exhaustion during post processing
Assigned by Mattermost
Oct 16, 2026
CVE-2026-18795Medium 6.4Missing server side validation allowed user to quarantine a DM and GM post
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19603Medium 4.3Private channel ID disclosure via user status endpoints
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19621Medium 6.5Mattermost leaks interactive-message integration secrets to non-admin users via post-deletion events and thread reads
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19600Medium 4.5Mattermost logs plaintext authentication tokens in debug-level server logs on failed auth attempts
Assigned by Mattermost
Oct 16, 2026
CVE-2026-16453High 7.1Mattermost SAML RelayState forgery allows unauthorized team membership
Assigned by Mattermost
Oct 16, 2026
CVE-2026-18560Medium 4.3Improper order of authorisations in Mattermost GetFile API leads to an authenticated user to determine a post’s quarantined status
Assigned by Mattermost
Oct 16, 2026
CVE-2026-19076Medium 4.4Mattermost fails to reject OAuth application sessions in account type switch, allowing account takeover via bearer token
Assigned by Mattermost
Oct 16, 2026
CVE-2026-18223Medium 5.0Mattermost invitation tokens not bound to invited email address allowing unauthorized team and private channel access
Assigned by Mattermost
Oct 16, 2026
CVE-2026-18256Medium 4.3Private team metadata disclosure via the team search API
Assigned by Mattermost
Oct 16, 2026
Page 1 of 2Next

CVSS is the assigning CNA's score where it gives one, otherwise NVD's. The healthcare tag is a documented heuristic (a list of clinical and health IT vendors, and clinical terms in the description), not a classification. The CVE record is authoritative.

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