{
"id": "GHSA-wchh-9x6h-7f6p",
"aliases": [],
"details": "### Problem\n\nMultiple vulnerabilities were disclosed in 2024 affecting libolm (Olm): AES timing / side‑channel, Ed25519 signature malleability, and timing leaks in base64 decoding; several CVEs were assigned. Patches and mitigations were published; maintainers recommend upgrading to fixed versions. In addition, a 2022 “Olm/Megolm protocol confusion” advisory affecting some SDKs was critical and required client-side fixes. Use patched versions of libolm and up-to-date Matrix SDKs; avoid unpatched clients/servers.\n\nOlm is a dependency of `matrix-commander` (Python version, not Rust version).\n\nWARNING:\n\nDue to cryptographic [olm dependency deprecation](https://github.com/8go/matrix-commander/issues/204#issuecomment-3523986979), this program is cryptographically unsafe to use until https://github.com/matrix-nio/matrix-nio/pull/555 is merged. Good news: https://github.com/8go/matrix-commander-rs is a Rust alternative not having this issue.\n\n\n### References\n- CVE-2022-39255\n- CVE-2024-45193\n- https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/\n- https://nvd.nist.gov/nvd.cfm?cvename=CVE-2024-45193\n- https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-hw6g-j8v6-9hcm\n\n### Workarounds\n- use the Rust version: https://github.com/8go/matrix-commander-rs \n\n### Severity:\n\nMedium\n\nCVE-2022-39255 — MEDIUM (NVD/MITRE lists CVSS base score 5.x — treated as Medium).\n\nCVE-2024-45193 — MEDIUM (NVD shows CVSS 3.1 base score ~4.3 — Medium)",
"summary": "olm dependency deprecation: CVE-2022-39255 and CVE-2024-45193",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0.6"
}
]
}
],
"package": {
"name": "matrix-commander",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-07-29T16:11:45Z",
"severity": [],
"published": "2026-07-29T16:11:45Z",
"references": [
{
"url": "https://github.com/8go/matrix-commander/security/advisories/GHSA-wchh-9x6h-7f6p",
"type": "WEB"
},
{
"url": "https://github.com/8go/matrix-commander/issues/204#issuecomment-3523986979",
"type": "WEB"
},
{
"url": "https://github.com/matrix-nio/matrix-nio/pull/555",
"type": "WEB"
},
{
"url": "https://github.com/matrix-nio/matrix-nio/commit/71a1c808bc2ae6ea2a6e8effa7c11bd09796c626",
"type": "WEB"
},
{
"url": "https://github.com/8go/matrix-commander",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-1395"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-07-29T16:11:45Z"
}
}