Mattermost fails to perform correct authorization checks when creating a playbook action, allowing users without access to the playbook to create playbook actions. If the playbook action created is to post a message in a channel based on specific keywords in a post, some playbook information, like the name, can be leaked.
Solution:
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Link | Tags |
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https://mattermost.com/security-updates | vendor advisory issue tracking |