CVE-2026-77244 | sooperset Mcp Atlassian up to 0.21.x HTTP Transport improper authentication

September 22, 2026 Yanac

A vulnerability classified as critical has been found in sooperset Mcp Atlassian up to 0.21.x. This affects the function UserTokenMiddleware/AtlassianOpaqueTokenVerifier/_get_fetcher/streamable-http of the component HTTP Transport. The manipulation leads to improper authentication.

This vulnerability is referenced as CVE-2026-77244. Remote exploitation of the attack is possible. No exploit is available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More