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GHSA-c37r-v8jx-7cv2

Mattermost Uncontrolled Resource Consumption vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2023-40703

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost/server/v8 >= 9.1.0, < 9.1.1 9.1.1
Go github.com/mattermost/mattermost/server/v8 >= 9.0.0, < 9.0.2 9.0.2
Go github.com/mattermost/mattermost/server/v8 < 8.1.4 8.1.4
Go github.com/mattermost/mattermost-server/v6 < 7.8.13 7.8.13

Details

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

Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.

References

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