An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when Single Sign-On OAuth2 is used. An attacker could claim somebody else's account.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Link | Tags |
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https://mattermost.com/security-updates/ | vendor advisory |