{"action":"Upgrade synapse to 1.47.1-r0 or later.","affected":[{"fixed":"1.47.1-r0","introduced":"0"}],"component":"synapse","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.22","exploited":false,"fixed_versions":["1.47.1-r0"],"id":"tcs_01M6GZ0WRCB2AGXP8N7VXRSFMB","modified_at":"2026-11-03T06:32:47.836775025Z","published_at":"2021-11-23T20:15:11.687Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-41281","https://security.alpinelinux.org/vuln/CVE-2021-41281"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-41281#Alpine:v3.22/synapse","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-41281"}],"summary":"Synapse is a package for Matrix homeservers written in Python 3/Twisted. Prior to version 1.47.1, Synapse instances with the media repository enabled can be tricked into downloading a file from a remo"}