Security Vulnerabilities
Improperly controlled modification of JIT elevation settings in PAM checkout in Devolutions Server 2026.3.8.0 and earlier allows an authenticated user with PAM checkout access to delete arbitrary Active Directory groups or retain elevated privileges via client-supplied JIT elevation settings in a checkout update request.
CVSS Score
4.3
EPSS Score
0.002
Published
2026-10-16
Server-side request forgery in PingOne groups endpoint in Devolutions Server 2026.3.8.0 and earlier allows an authenticated low-privileged user to exfiltrate the stored PingOne application secret via an attacker-controlled PingOne configuration in the request parameter.
CVSS Score
2.6
EPSS Score
0.001
Published
2026-10-16
Incorrect authorization in add-on properties in Devolutions Server 2026.3.8.0 and earlier allows an authenticated user with only View permission to obtain add-on passwords via the unredacted add-on properties returned in connection data.
CVSS Score
6.5
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to reject OAuth application sessions in the account type switch endpoint, which allows an attacker with a valid OAuth bearer token for a target user to permanently take over that user's SSO-backed account by setting an attacker-controlled password and detaching the account from its identity provider via a crafted request to POST /api/v4/users/login/switch.. Mattermost Advisory ID: MMSA-2026-00758
CVSS Score
4.4
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to sanitize authentication tokens before writing them to server log entries, which allows an attacker with access to server logs to obtain valid session tokens or OAuth access tokens and impersonate authenticated users via the debug-level Mattermost server log.. Mattermost Advisory ID: MMSA-2026-00763
CVSS Score
4.5
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to strip action integration secrets from post payloads before broadcasting post-deletion web socket events and returning thread API responses, which allows an authenticated channel member to obtain server-side webhook URLs and authentication context from interactive-message posts via the post_deleted websocket event or the threads REST API.. Mattermost Advisory ID: MMSA-2026-00766
CVSS Score
6.5
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to restrict Slack import account binding to system administrator-initiated imports which allows an authenticated attacker with team admin privileges to force-add existing Mattermost users to their team and forge posts attributed to those users' identities via a crafted Slack export containing target users' email addresses.. Mattermost Advisory ID: MMSA-2026-00757
CVSS Score
4.3
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to limit the size of remote image responses buffered in memory during local image proxy direct fetches, which allows a remote attacker to cause memory exhaustion on the server via a crafted oversized image response.. Mattermost Advisory ID: MMSA-2026-00726
CVSS Score
6.5
EPSS Score
0.003
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to verify the integrity of the SAML RelayState POST parameter which allows an authenticated SAML user to join any team, including invite-only teams, via forging the team_id or invite_id fields in the RelayState.. Mattermost Advisory ID: MMSA-2026-00727
CVSS Score
7.1
EPSS Score
0.002
Published
2026-10-16
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to validate the invited recipient's email address when redeeming team and guest invitation tokens, which allows an authenticated attacker to join a team or gain unauthorized access to private channels via a forwarded or leaked invitation link.. Mattermost Advisory ID: MMSA-2026-00747
CVSS Score
5.0
EPSS Score
0.002
Published
2026-10-16