🛡️ CVE-2020-24359 — vault-ssh-helper

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-20 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper Input Validation in vault-ssh-helper

HashiCorp vault-ssh-helper (github.com/hashicorp/vault-ssh-helper/helper) up to and including version 0.1.6 incorrectly accepted Vault-issued SSH OTPs for the subnet in which a host's network interface was located, rather than the specific IP address assigned to that interface. Fixed in 0.2.0.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Weakness class

CVE-2020-24359 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

CVE-2020-24359 is recorded against 1 package.

  • github.com/hashicorp/vault-ssh-helper

Timeline and source

Published on 15 February 2022 and last revised on 3 March 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE CWE-20
Public Exploit ✅ No
Source OSV
Published 2022-02-15
Updated 2026-08-12
Modified 2026-03-03

Affected Packages

Software From version Fixed in
github.com/hashicorp/vault-ssh-helper — —

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