{"id":"DEBIAN-CVE-2026-123610","details":"rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large history window. Malicious peers can send a certificate with a five-byte Brotli header requesting up to 1 GiB before authentication, aborting Brotli-enabled clients or client-authenticating servers whose allocator cannot satisfy the request.","modified":"2026-11-08T10:00:16.492747511Z","published":"2026-11-08T02:16:56.267Z","upstream":["CVE-2026-123610"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-123610"}],"affected":[{"package":{"name":"rust-rustls","ecosystem":"Debian:12","purl":"pkg:deb/debian/rust-rustls?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20.8-4","0.20.8-4.1","0.20.8-4.2","0.21.10-1","0.21.12-1","0.21.12-2","0.21.12-3","0.21.12-4","0.21.12-5","0.21.12-6","0.21.12-7","0.21.12-8","0.21.12-9","0.21.5-1","0.21.5-2","0.21.5-3","0.21.5-4","0.21.5-5","0.21.6-1","0.21.6-2","0.21.6-3","0.21.6-4","0.21.7-1","0.21.8-1","0.21.8-2","0.21.8-3","0.21.8-3.1","0.21.9-1","0.23.16-1","0.23.20+ds-1","0.23.20+ds-10","0.23.20+ds-2","0.23.20+ds-3","0.23.20+ds-4","0.23.20+ds-5","0.23.20+ds-6","0.23.20+ds-7","0.23.20+ds-8","0.23.20+ds-9","0.23.25+ds-1","0.23.26+ds-1","0.23.31+ds-1","0.23.31+ds-2","0.23.31+ds-3","0.23.31+ds-4","0.23.31+ds-5","0.23.31+ds-6","0.23.31+ds-7","0.23.32+ds-1","0.23.32+ds-2","0.23.33+ds-1","0.23.33+ds-2","0.23.33+ds-3","0.23.33+ds-4","0.23.35+ds-1","0.23.36+ds-1","0.23.37+ds-1","0.23.37+ds-2","0.23.37+ds-3","0.23.38+ds-1","0.23.40+ds-1","0.23.41+ds-1","0.23.43+ds-1","0.23.45+ds-1","0.23.46+ds-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123610.json"}},{"package":{"name":"rust-rustls","ecosystem":"Debian:13","purl":"pkg:deb/debian/rust-rustls?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.23.26+ds-1","0.23.31+ds-1","0.23.31+ds-2","0.23.31+ds-3","0.23.31+ds-4","0.23.31+ds-5","0.23.31+ds-6","0.23.31+ds-7","0.23.32+ds-1","0.23.32+ds-2","0.23.33+ds-1","0.23.33+ds-2","0.23.33+ds-3","0.23.33+ds-4","0.23.35+ds-1","0.23.36+ds-1","0.23.37+ds-1","0.23.37+ds-2","0.23.37+ds-3","0.23.38+ds-1","0.23.40+ds-1","0.23.41+ds-1","0.23.43+ds-1","0.23.45+ds-1","0.23.46+ds-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123610.json"}},{"package":{"name":"rust-rustls","ecosystem":"Debian:14","purl":"pkg:deb/debian/rust-rustls?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.23.26+ds-1","0.23.31+ds-1","0.23.31+ds-2","0.23.31+ds-3","0.23.31+ds-4","0.23.31+ds-5","0.23.31+ds-6","0.23.31+ds-7","0.23.32+ds-1","0.23.32+ds-2","0.23.33+ds-1","0.23.33+ds-2","0.23.33+ds-3","0.23.33+ds-4","0.23.35+ds-1","0.23.36+ds-1","0.23.37+ds-1","0.23.37+ds-2","0.23.37+ds-3","0.23.38+ds-1","0.23.40+ds-1","0.23.41+ds-1","0.23.43+ds-1","0.23.45+ds-1","0.23.46+ds-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123610.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}