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Vulnerability record · CVE-2023-28113 · published 16 March 2023

CVE-2023-28113: Russh project russh improper input validation vulnerability

Russh Project · Russh

russh is a Rust SSH client and server library. Starting in version 0.34.0 and prior to versions 0.36.2 and 0.37.1, Diffie-Hellman key validation is insufficient, which can lead to insecure shared secrets and therefore breaks confidentiality. Connections between a russh client and server or those of a russh peer with some other misbehaving peer are most likely to be problematic. These may vulnerable to eavesdropping. Most other implementations reject such keys, so this is mainly an interoperability issue in such a case. This issue is fixed in versions 0.36.2 and 0.37.1

5.9 CVSS 3.1 Medium EPSS 0.64% · top 51.5% CWE-20 · Improper input validationCWE-358 · CWE-358
5.9CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

russh is a Rust SSH client and server library. Starting in version 0.34.0 and prior to versions 0.36.2 and 0.37.1, Diffie-Hellman key validation is insufficient, which can lead to insecure shared secrets and therefore breaks confidentiality. Connections between a russh client and server or those of a russh peer with some other misbehaving peer are most likely to be problematic. These may vulnerable to eavesdropping. Most other implementations reject such keys, so this is mainly an interoperability issue in such a case. This issue is fixed in versions 0.36.2 and 0.37.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L72-L76 Product
https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L78-L81 Product
https://github.com/warp-tech/russh/commit/d831a3716d3719dc76f091fcea9d94bd4ef97c6e Patch
https://github.com/warp-tech/russh/releases/tag/v0.36.2 Release Notes
https://github.com/warp-tech/russh/releases/tag/v0.37.1 Release Notes
https://github.com/warp-tech/russh/security/advisories/GHSA-cqvm-j2r2-hwpg ExploitVendor Advisory
https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L72-L76 Product
https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L78-L81 Product
https://github.com/warp-tech/russh/commit/d831a3716d3719dc76f091fcea9d94bd4ef97c6e Patch
https://github.com/warp-tech/russh/releases/tag/v0.36.2 Release Notes
https://github.com/warp-tech/russh/releases/tag/v0.37.1 Release Notes
https://github.com/warp-tech/russh/security/advisories/GHSA-cqvm-j2r2-hwpg ExploitVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-28113), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.