CVE-2026-102824

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-102824
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102824.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102824
Aliases
  • GHSA-w3jg-pjxf-73p4
Published
2026-09-29T18:27:41Z
Modified
2026-09-30T03:47:23Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Russh: Missing X25519 zero-point validation in hybrid ML-KEM key exchange
Details

Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-327"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102824.json"
}
References

Affected packages

Git / github.com/eugeny/russh

Affected ranges

Type
GIT
Repo
https://github.com/eugeny/russh
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
dbe2234491fcd50e0bf68438452932f918092fe0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "0.63.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

0.*
0.37.0-beta.1
v0.*
v0.34.0
v0.35.0-beta.1
v0.35.0-beta.2
v0.35.0-beta.3
v0.35.0-beta.5
v0.35.0-beta.6
v0.35.0-beta.7
v0.35.0-beta.8
v0.35.0-beta.9
v0.36.1
v0.37.0
v0.37.0-beta.1
v0.37.1
v0.38.0
v0.38.0-beta.1
v0.39.0-beta.1
v0.40.0
v0.40.1
v0.40.2
v0.42.0
v0.43.0
v0.43.0-beta.1
v0.44.0
v0.44.0-beta.1
v0.44.0-beta.3
v0.44.0-beta.4
v0.45.0
v0.46.0
v0.47.0-beta.3
v0.47.0-beta.4
v0.48.0
v0.48.1
v0.48.2
v0.49.0
v0.50.0
v0.50.0-beta.10
v0.50.0-beta.11
v0.50.0-beta.12
v0.50.0-beta.2
v0.50.0-beta.3
v0.50.0-beta.4
v0.50.0-beta.5
v0.50.0-beta.6
v0.50.0-beta.7
v0.50.0-beta.8
v0.50.0-beta.9
v0.50.1
v0.50.3
v0.50.4
v0.51.0
v0.51.0-beta.1
v0.51.0-beta.2
v0.51.0-beta.3
v0.51.1
v0.52.0
v0.52.0-beta.1
v0.52.1
v0.53.0
v0.53.0-beta.1
v0.54.0
v0.54.1
v0.54.2
v0.54.3
v0.54.4
v0.54.5
v0.54.6
v0.55.0
v0.56.0
v0.57.0
v0.57.1
v0.58.0
v0.59.0
v0.60.0
v0.60.1
v0.60.2
v0.60.3
v0.61.0
v0.61.1
v0.61.2
v0.62.0
v0.62.1
v0.62.2
v0.62.3
v0.62.4
v0.62.5
v0.62.6
v0.62.7
v0.63.0-beta.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102824.json"