{"action":"Upgrade matrix-sdk-crypto to 0.16.1 or later.","affected":[{"fixed":"0.16.1","introduced":"0.12.0"}],"component":"matrix-sdk-crypto","cve_ids":["CVE-2026-45056"],"ecosystem":"crates.io","epss":0.00308,"exploited":false,"fixed_versions":["0.16.1"],"ghsa_id":"GHSA-wfq4-36m3-9g42","id":"tcs_01M5KF42A9QBQMG21DVAZJZW83","modified_at":"2026-06-04T15:00:08.092172510Z","published_at":"2026-06-04T14:47:05Z","references":["https://osv.dev/vulnerability/GHSA-wfq4-36m3-9g42","https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-wfq4-36m3-9g42","https://github.com/matrix-org/matrix-rust-sdk/pull/6553","https://github.com/matrix-org/matrix-rust-sdk","https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-0.16.1","https://rustsec.org/advisories/RUSTSEC-2026-0159.html"],"severity":{"label":"medium","score":6.9},"sources":[{"source":"osv","source_id":"GHSA-wfq4-36m3-9g42","url":"https://osv.dev/vulnerability/GHSA-wfq4-36m3-9g42"},{"source":"nvd","source_id":"CVE-2026-45056","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45056"}],"summary":"Matrix Rust SDK: Sender-binding gaps in to-device and room-key attribution"}