GHSA-wchh-9x6h-7f6p olm dependency deprecation: CVE-2022-39255 and CVE-2024-45193
Vulnerabilities in the libolm cryptographic library allow side-channel attacks and signature malleability, compromising Matrix encryption security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GHSA-wchh-9x6h-7f6p?
GHSA-wchh-9x6h-7f6p is a vulnerability in matrix-commander, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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)
Which versions are affected by GHSA-wchh-9x6h-7f6p?
2 open source packages ship an affected version, including matrix-commander.
| Package | Affected | Fixed in |
|---|---|---|
matrix-commander PyPI | All versions to 8.0.6 | None |
matrix-commander PyPI | All versions to 8.0.6 | None |
How do I fix GHSA-wchh-9x6h-7f6p?
No fix has been published for GHSA-wchh-9x6h-7f6p yet. Limit exposure of the affected software until one is available.
Is GHSA-wchh-9x6h-7f6p being exploited?
There is no known exploitation of GHSA-wchh-9x6h-7f6p in the wild and no public exploit code.