Description
Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mattermost Mattermost
Default version status: unaffected
10.10.0 to ≤ 10.10.1affected10.5.0 to ≤ 10.5.9affected10.9.0 to ≤ 10.9.4affected10.11.0unaffected10.10.2unaffected10.5.10unaffected10.9.5unaffected