{"action":"Upgrade github.com/kcp-dev/kcp to 0.31.4 or later.","affected":[{"fixed":"0.31.4","introduced":"0"},{"fixed":"0.32.2","introduced":"0.32.0"}],"component":"github.com/kcp-dev/kcp","cve_ids":["CVE-2026-61682"],"ecosystem":"Go","epss":0.00384,"exploited":false,"fixed_versions":["0.31.4","0.32.2"],"ghsa_id":"GHSA-c8w2-fgvx-vhv4","id":"tcs_01M5KF71988H0H1Q2SR7EJNCY7","modified_at":"2026-09-28T17:11:09.141356782Z","published_at":"2026-09-18T17:15:49Z","references":["https://osv.dev/vulnerability/GHSA-c8w2-fgvx-vhv4","https://github.com/kcp-dev/kcp/security/advisories/GHSA-c8w2-fgvx-vhv4","https://github.com/kcp-dev/kcp/commit/7437cdcfec8f927d1a9bf1b2dd1e075d038e27ca","https://github.com/kcp-dev/kcp","https://github.com/kcp-dev/kcp/releases/tag/v0.31.4","https://github.com/kcp-dev/kcp/releases/tag/v0.32.2"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"GHSA-c8w2-fgvx-vhv4","url":"https://osv.dev/vulnerability/GHSA-c8w2-fgvx-vhv4"}],"summary":"kcp front-proxy does not strip inbound X-Remote-* identity headers, allowing any authenticated client to inject groups/warrants and impersonate system:masters in any workspace"}