{"id":"CVE-2024-34353","aliases":["EUVD-2024-1554","GHSA-9ggc-845v-gcgv"],"status":"published","title":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","description":"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.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00193,"percentile":0.09088,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-532"],"published":"2024-05-13T15:43:10Z","modified":"2026-11-04T02:46:17Z","fixes":[{"ecosystem":"crates.io","package":"matrix-sdk-crypto","fixed_in":["0.7.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"matrix-sdk-crypto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.7.0"},{"last_affected":"0.7.0"},{"fixed":"0.7.1"}]}],"versions":["0.7.0"]},{"source":"osv","ecosystem":"crates.io","package":"matrix-sdk-crypto","ranges":[{"type":"SEMVER","events":[{"introduced":"0.7.0"},{"fixed":"0.7.1"}]}],"versions":["0.7.0"]}],"products":[{"vendor":"matrix-org","product":"matrix-sdk-crypto"}],"references":[{"url":"https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv","tags":["x_refsource_CONFIRM","x_transferred","advisory","web"]},{"url":"https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067","tags":["x_refsource_MISC","x_transferred","fix","web"]},{"url":"https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0","tags":["x_refsource_MISC","x_transferred","fix","web"]},{"url":"https://crates.io/crates/matrix-sdk-crypto/0.7.1","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34353","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9ggc-845v-gcgv"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34353.json","tags":["advisory"]},{"url":"https://github.com/matrix-org/matrix-rust-sdk","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-34353","title":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","description":"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.","status":"published","published":"2024-05-13T15:43:10.574Z","modified":"2024-08-02T02:51:10.872Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-532"],"updated_at":"2026-11-02T14:34:23.193864Z"}],"euvd":[{"id":"EUVD-2024-1554","description":"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.","status":"published","published":"2024-05-13T15:43:10Z","modified":"2024-08-02T02:51:10Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:21.347751Z"}],"ghsa":[{"id":"GHSA-9ggc-845v-gcgv","title":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","description":"### Introduction\n\nIn 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 cryptography, with each server-side key backup assigned a unique public-private key pair.\n\n### Impact\n\nDue to a logic bug introduced in https://github.com/matrix-org/matrix-rust-sdk/pull/2961/commits/71136e44c03c79f80d6d1a2446673bc4d53a2067, the matrix-sdk-crypto crate version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate).\n\n### Patches\nThis issue has been resolved in matrix-sdk-crypto [version 0.7.1](https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1).\n\n### Workarounds\nNone.\n\n### References\n\n- [crates.io release](https://crates.io/crates/matrix-sdk-crypto/0.7.1)\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).\n","status":"published","published":"2024-05-13T16:04:37Z","modified":"2024-05-14T20:06:31Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-532"],"updated_at":"2026-11-02T14:37:48.848211Z"}],"nvd":[{"id":"CVE-2024-34353","description":"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.","status":"published","published":"2024-05-14T15:38:43.91Z","modified":"2026-06-17T07:33:13.997Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-532"],"updated_at":"2026-11-02T14:09:57.497105Z"}],"osv":[{"id":"CVE-2024-34353","title":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","description":"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.","status":"published","published":"2024-05-13T15:43:10.574Z","modified":"2026-11-04T02:46:17.489843497Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-532"],"updated_at":"2026-11-04T02:53:57.551196Z"},{"id":"GHSA-9ggc-845v-gcgv","title":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","description":"### Introduction\n\nIn 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 cryptography, with each server-side key backup assigned a unique public-private key pair.\n\n### Impact\n\nDue to a logic bug introduced in https://github.com/matrix-org/matrix-rust-sdk/pull/2961/commits/71136e44c03c79f80d6d1a2446673bc4d53a2067, the matrix-sdk-crypto crate version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate).\n\n### Patches\nThis issue has been resolved in matrix-sdk-crypto [version 0.7.1](https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1).\n\n### Workarounds\nNone.\n\n### References\n\n- [crates.io release](https://crates.io/crates/matrix-sdk-crypto/0.7.1)\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).\n","status":"published","published":"2024-05-13T16:04:37Z","modified":"2026-09-10T03:50:13.670354018Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-532"],"updated_at":"2026-11-02T15:46:43.875515Z"}]}}