CVE-2026-75911 Hmbown CVE debrief

Who should care

Defenders and users of CodeWhale versions before 0.8.64 should assess exposure and prioritize verification and remediation efforts. This includes verifying CodeWhale versions, restricting user access to untrusted repositories, and monitoring repository commits for malicious files. Security teams and vulnerability management teams should also review the vulnerability and plan vendor-supported updates or mitigations through normal change control where is .

Why it matters

CVE-2026-75911 allows attackers to enable arbitrary shell command execution in CodeWhale versions before 0.8.64, requiring defenders to verify versions, restrict user access, and monitor repository commits.

• Potential arbitrary shell command execution on victim's machine
• Possible unauthorized access to sensitive data
• Required verification of CodeWhale versions and user access controls
• Need for monitoring repository commits for malicious files

Technical summary

CodeWhale versions before 0.8.64 fail to properly validate the allow_shell configuration parameter from project config files, allowing attackers to enable arbitrary shell command execution by committing a malicious .codewhale/config.toml file to a repository. This vulnerability requires defenders to verify versions, restrict user access, and monitor repository commits. The vulnerability has a CVSS score of 8.5 and a severity of HIGH. The CVE record and NVD entry provide details on the vulnerability in CodeWhale versions before 0.8.64.

Defensive priority

Defenders should prioritize verifying CodeWhale versions before 0.8.64 and restrict user access to untrusted repositories.

Recommended defensive actions

• Verify CodeWhale versions and ensure they are 0.8.64 or later
• Restrict user access to untrusted repositories
• Monitor repository commits for malicious .codewhale/config.toml files
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in CodeWhale versions before 0.8.64. The vulnerability allows attackers to enable arbitrary shell command execution by committing a malicious .codewhale/config.toml file to a repository.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.