{"id":"CVE-2024-34353","aliases":["GHSA-9ggc-845v-gcgv"],"url":"https://o3.security/vulnerability/CVE-2024-34353","summary":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","details":"The matrix-sdk-crypto crate, part of the Matrix Rust SDK project, is an implementation of a Matrix end-to-end encryption state machine in Rust. In Matrix, the server-side `key backup` stores encrypted copies of Matrix message keys. This facilitates key sharing between a user's devices and provides a redundant copy in case all devices are lost. The key backup uses asymmetric\ncryptography, with each server-side key backup assigned a unique public-private key pair. Due to a logic bug introduced in commit 71136e44c03c79f80d6d1a2446673bc4d53a2067, matrix-sdk-crypto version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate). This issue has been resolved in matrix-sdk-crypto version 0.7.1. No known workarounds are available.","published":"2024-05-13T15:43:10.574Z","modified":"2026-08-12T03:51:08.316328825Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"matrix-sdk-crypto","fixedVersion":"0.7.1"}],"fix":{"url":"https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067","label":"matrix-org/matrix-rust-sdk@71136e4"},"references":[{"type":"WEB","url":"https://crates.io/crates/matrix-sdk-crypto/0.7.1"},{"type":"WEB","url":"https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34353.json"},{"type":"ADVISORY","url":"https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34353"},{"type":"FIX","url":"https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067"},{"type":"FIX","url":"https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:08.316328825Z"}}