{"action":"Upgrade curl to 7.56.1-r0 or later.","affected":[{"fixed":"7.56.1-r0","introduced":"0"}],"component":"curl","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.9","exploited":false,"fixed_versions":["7.56.1-r0"],"id":"tcs_01M5N8TXCYQ5JPT4XZGSFJV8N7","modified_at":"2026-06-15T18:18:06.722686783Z","published_at":"2017-10-31T21:29:00.203Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2017-1000257","https://security.alpinelinux.org/vuln/CVE-2017-1000257"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2017-1000257#Alpine:v3.9/curl","url":"https://osv.dev/vulnerability/ALPINE-CVE-2017-1000257"}],"summary":"An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer a"}