CVE-2026-45310: Hmbown Codewhale

High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days.

CodeWhale is a DeepSeek + MiMo coding agent in terminal. Prior to 0.8.22, the fetch_url tool validates the initial URL's resolved IP address against a restricted-IP blocklist (is_restricted_ip()) to prevent SSRF attacks against internal services (cloud metadata endpoints, localhost, private networks). However, the HTTP client (reqwest) is configured to automatically follow up to 5 redirects (reqwest::redirect::Policy::limited(5)) without re-validating the redirect target against the same SSRF protections. This vulnerability is fixed in 0.8.22.

Affected products

• Hmbown Codewhale: before 0.8.22 (fixed in 0.8.22)

Published 2026-05-28. Last modified 2026-06-17.