{"action":"Upgrade better-auth to 1.6.11 or later.","affected":[{"fixed":"1.6.11","introduced":"0"}],"component":"better-auth","cve_ids":["CVE-2026-53512"],"ecosystem":"npm","epss":0.00275,"exploited":false,"fixed_versions":["1.6.11"],"ghsa_id":"GHSA-pw9m-5jxm-xr6h","id":"tcs_01M5KG4KEQ4CD7RM2B4MTPWYT2","modified_at":"2026-07-20T19:30:24.092604956Z","published_at":"2026-07-07T20:11:50Z","references":["https://osv.dev/vulnerability/GHSA-pw9m-5jxm-xr6h","https://github.com/better-auth/better-auth/security/advisories/GHSA-pw9m-5jxm-xr6h","https://nvd.nist.gov/vuln/detail/CVE-2026-53512","https://github.com/better-auth/better-auth/pull/9576","https://github.com/better-auth/better-auth/commit/1f2ff4215c4affff0b140b0c0a712c0dde35659c","https://github.com/better-auth/better-auth","https://github.com/better-auth/better-auth/releases/tag/v1.6.11"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GHSA-pw9m-5jxm-xr6h","url":"https://osv.dev/vulnerability/GHSA-pw9m-5jxm-xr6h"}],"summary":"Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins"}