Insufficient Verification of Data Authenticity Affecting tinyssh package, versions <20260301-1


Severity

Recommended
0.0
low
0
10

Based on Debian security rating.

Threat Intelligence

EPSS
0.08% (1st percentile)

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  • Snyk IDSNYK-DEBIAN14-TINYSSH-15764377
  • published26 Mar 2026
  • disclosed22 Mar 2026

Introduced: 22 Mar 2026

CVE-2026-4541  (opens in a new tab)
CWE-345  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade Debian:14 tinyssh to version 20260301-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tinyssh package and not the tinyssh package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

A flaw has been found in janmojzis tinyssh up to 20250501. Impacted is an unknown function of the file tinyssh/crypto_sign_ed25519_tinyssh.c of the component Ed25519 Signature Handler. This manipulation causes improper verification of cryptographic signature. The attack is restricted to local execution. The attack's complexity is rated as high. The exploitability is considered difficult. The exploit has been published and may be used. Upgrading to version 20260301 is recommended to address this issue. Patch name: 9c87269607e0d7d20174df742accc49c042cff17. Upgrading the affected component is recommended.

CVSS Base Scores

version 3.1