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GHSA-vww6-79rv-3j4x

Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created by the Jira plugin

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-64641

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost/server/v8 < 8.0.0-20251121122154-b57c297c6d7 8.0.0-20251121122154-b57c297c6d7
Go github.com/mattermost/mattermost-server >= 10.11.0, < 10.11.8 10.11.8
Go github.com/mattermost/mattermost-server >= 10.12.0, < 10.12.4 10.12.4
Go github.com/mattermost/mattermost-server >= 11.0.0, < 11.0.6 11.0.6
Go github.com/mattermost/mattermost-server >= 11.1.0, < 11.1.1 11.1.1

Details

As written in the advisory (Markdown source, shown as plain text).

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts

References

External links from the advisory. They lead to third-party sites.