{"action":"Upgrade botan to 2.18.1+dfsg-3 or later.","affected":[{"fixed":"2.18.1+dfsg-3","introduced":"0"}],"component":"botan","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.18.1+dfsg-3"],"id":"tcs_01M5NFZ420V7CKNW2SGVYP00FP","modified_at":"2026-10-23T18:03:32.913231063Z","published_at":"2021-09-06T19:15:07.630Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-40529","https://security-tracker.debian.org/tracker/CVE-2021-40529"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-40529","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-40529"}],"summary":"The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dang"}