{"action":"Upgrade tor to 0.4.9.9-1 or later.","affected":[{"fixed":"0.4.9.9-1","introduced":"0"}],"component":"tor","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["0.4.9.9-1"],"id":"tcs_01M5NVE9Q0JVPRDPGFVEAPE11W","modified_at":"2026-10-23T17:47:44.427475265Z","published_at":"2026-08-20T21:17:11.233Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-77639","https://security-tracker.debian.org/tracker/CVE-2026-77639"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-77639","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-77639"}],"summary":"Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream detection threshold, to avoid the compressio"}