olm dependency deprecation: CVE-2022-39255 and CVE-2024-45193
Problem
Multiple 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.
Olm is a dependency of matrix-commander (Python version, not Rust version).
WARNING:
Due to cryptographic olm dependency deprecation, 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.
References
- CVE-2022-39255
- CVE-2024-45193
- https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/
- https://nvd.nist.gov/nvd.cfm?cvename=CVE-2024-45193
- https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-hw6g-j8v6-9hcm
Workarounds
- use the Rust version: https://github.com/8go/matrix-commander-rs
Severity:
Medium
CVE-2022-39255 — MEDIUM (NVD/MITRE lists CVSS base score 5.x — treated as Medium).
CVE-2024-45193 — MEDIUM (NVD shows CVSS 3.1 base score ~4.3 — Medium)
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | matrix-commander | <= 8.0.6 | no fix |
References
- https://github.com/8go/matrix-commander/security/advisories/GHSA-wchh-9x6h-7f6p
- https://github.com/8go/matrix-commander/issues/204#issuecomment-3523986979
- https://github.com/matrix-nio/matrix-nio/pull/555
- https://github.com/matrix-nio/matrix-nio/commit/71a1c808bc2ae6ea2a6e8effa7c11bd09796c626
- https://github.com/8go/matrix-commander
- Weakness (CWE)
CWE-1395- Platform
- Python (PyPI)
- Package
matrix-commander- Disclosed
- 29.07.2026
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - GHSA-wchh-9x6h-7f6p - CC BY 4.0
Vulnerability history: matrix-commander
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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