CVE-2026-102824

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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

Downstream

Published

2026-09-29T18:27:41Z

Modified

2026-10-21T02:54:29Z

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

Fixed

dbe2234491fcd50e0bf68438452932f918092fe0

Fixed

8da8967f196472576b1565d518a0ed60fce60f0c

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.63.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "8da8967f196472576b1565d518a0ed60fce60f0c"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v0.63.0",
            "range":  [
                {
                    "fixed":  "dbe2234491fcd50e0bf68438452932f918092fe0"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

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"