{"action":"Upgrade olm to 3.2.3~dfsg-3 or later.","affected":[{"fixed":"3.2.3~dfsg-3","introduced":"0"}],"component":"olm","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.2.3~dfsg-3"],"id":"tcs_01M5NFRS1VWB8NA7TYFRWED46F","modified_at":"2026-10-23T18:03:38.285172635Z","published_at":"2021-06-16T18:15:09.730Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-34813","https://security-tracker.debian.org/tracker/CVE-2021-34813"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-34813#Debian:14/olm","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-34813"}],"summary":"Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a"}