CVE-2026-45311Network attack vector

Code execution via auto-approved cargo test

Published May 28, 2026 · Updated May 28, 2026

Code injection in Hmbown CodeWhale 0.3.0 through 0.8.22 allows remote attackers to execute code when a malicious repository is opened. The run_tests tool launches cargo test with ApprovalRequirement::Auto, so tests, build scripts, and proc macros execute without an approval prompt. Opening attacker-controlled repository content and inducing a test run is sufficient; executed code can read credentials, alter files, or establish persistence.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Hmbown CodeWhale 0.3.0 through 0.8.22 allows remote attackers to execute code when a malicious repository is opened. The run_tests tool launches cargo test with ApprovalRequirement::Auto, so tests, build scripts, and proc macros execute without an approval prompt. Opening attacker-controlled repository content and inducing a test run is sufficient; executed code can read credentials, alter files, or establish persistence.

The record

CVE
CVE-2026-45311
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Hmbown
Product
CodeWhale
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record 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=>= 0.3.0, < 0.8.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hmbown · CodeWhaleversion=>= 0.3.0, < 0.8.23

Published CVSS scores

No CVSS assessment is available in this record.

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

T1203Exploitation for Client Execution

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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