What is CVE-2026-45374?

CVE-2026-45374 is a critical-severity vulnerability in Hmbown Codewhale, classified under Code Injection. CVSS score: 9.6/10. Published 2026-05-28.

How severe is CVE-2026-45374?

Critical severity. CVSS v3 base score is 9.6 out of 10.

RCE in Hmbown Codewhale

CVE-2026-45374

CodeWhale is a DeepSeek + MiMo coding agent in terminal. Prior to 0.8.26, the task_create tool spawns durable sub-agents that inherit two insecure defaults, allow_shell defaults to true (config.rs:1499: self.allow_shell.unwrap_or(true)) an…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (14.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Hmbown Codewhale — versions < 0.8.26

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-45374?: CVE-2026-45374 is a critical-severity vulnerability in Hmbown Codewhale, classified under Code Injection. CVSS score: 9.6/10. Published 2026-05-28.
How severe is CVE-2026-45374?: Critical severity. CVSS v3 base score is 9.6 out of 10.