{"action":"Upgrade golang-1.26 to 1.26.6-1 or later.","affected":[{"fixed":"1.26.6-1","introduced":"0"}],"component":"golang-1.26","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.26.6-1"],"id":"tcs_01M5NT2EWBY4AAQ4NAK983XNM0","modified_at":"2026-10-12T11:00:12.596244085Z","published_at":"2026-08-13T22:17:22.797Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-56865","https://security-tracker.debian.org/tracker/CVE-2026-56865"],"severity":{"label":"high","score":8.4},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-56865#Debian:14/golang-1.26","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-56865"}],"summary":"A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to bypass the GOSUMDB check and persist attacker-controlled module content to a local Go m"}