CVE-2022-46176Network attack vector

Source-code tampering via unverified SSH host keys

Published Jan 11, 2023 · Updated Mar 10, 2025

Authentication failure in Rust Project Cargo 0.67.0 and earlier allows man-in-the-middle attackers to alter SSH-fetched source code. Cargo's built-in Git transport accepts an SSH server's public key without comparing it against trusted host keys when cloning indexes or dependencies. Exploitation requires an SSH-based fetch, including HTTPS-to-SSH URL rewrites, and a network position that can intercept the connection.

CVSS severity5.9
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication failure in Rust Project Cargo 0.67.0 and earlier allows man-in-the-middle attackers to alter SSH-fetched source code. Cargo's built-in Git transport accepts an SSH server's public key without comparing it against trusted host keys when cloning indexes or dependencies. Exploitation requires an SSH-based fetch, including HTTPS-to-SSH URL rewrites, and a network position that can intercept the connection.

The record

CVE
CVE-2022-46176
Published
Jan 11, 2023
Updated
Mar 10, 2025
Vendor
Rust Project
Product
Cargo
Classifications
CWE-347, CWE-322, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 0.67.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rust Project · Cargoversion=<= 0.67.0

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
5.9NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
CWE-322Key Exchange without Entity Authentication
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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