{"action":"Upgrade github.com/valyala/fasthttp to 1.70.0 or later.","affected":[{"fixed":"1.70.0","introduced":"0"}],"component":"github.com/valyala/fasthttp","cve_ids":[],"ecosystem":"Go","exploited":false,"fixed_versions":["1.70.0"],"id":"tcs_01M5KGH1F2EFWVG58BX88SAMBZ","modified_at":"2026-08-19T15:41:58.201679153Z","published_at":"2026-08-18T18:05:09Z","references":["https://osv.dev/vulnerability/GO-2026-4950","https://github.com/golang/vulndb/issues/4950","https://github.com/valyala/fasthttp/pull/2163","https://gist.github.com/thesmartshadow/af53acdfe0d6ce352d14eb86cecf5a08","https://github.com/valyala/fasthttp/releases/tag/v1.70.0"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4950","url":"https://osv.dev/vulnerability/GO-2026-4950"}],"summary":"Authorization bypass via double-encoded paths in github.com/valyala/fasthttp"}