Improper Input Validation Affecting rust-russh package, versions <0.64.1-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN14-RUSTRUSSH-17311241
- published12 Jun 2026
- disclosed10 Jun 2026
Introduced: 10 Jun 2026
CVE-2026-48108 (opens in a new tab)How to fix?
Upgrade Debian:14 rust-russh to version 0.64.1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rust-russh package and not the rust-russh package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, russh did not enforce the SSH identification-string rules as deliberately as OpenSSH. In particular, the server-side identification reader used the same permissive path as the client, allowing pre-banner lines from clients, and the reader did not enforce a bounded number of pre-banner lines. For a library server built on russh, this could allow a remote peer to hold connection setup resources in the cleartext pre-authentication phase with malformed identification input that should have been rejected early. This issue has been patched in version 0.61.0.