What is CVE-2026-75915?

CVE-2026-75915 is a high-severity vulnerability in Hmbown Codewhale, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-08-18.

How severe is CVE-2026-75915?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Hmbown Codewhale

CVE-2026-75915

CodeWhale versions before 0.8.64 contain an environment variable exposure vulnerability in the js_execution tool that fails to scrub parent process environment variables before spawning Node.js. Attackers can craft malicious JavaScript code executed by the tool to read process.env and leak API keys, cloud credentials, and authentication tokens back to the model context.

Vulnerability class: Information Disclosure

Published 2026-08-18 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.6th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002

Affected products

Hmbown Codewhale

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

github.com/Hmbown/CodeWhale/security/advisories/GHSA-h539-c7r8-3xq4 (vendor-advisory)
github.com/Hmbown/CodeWhale/commit/26de44a8bd5051f8f944ea60b2c37ae1d2b7d25e (patch)
www.vulncheck.com/advisories/codewhale-before-environment-variable-leak-via-js-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-75915?: CVE-2026-75915 is a high-severity vulnerability in Hmbown Codewhale, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-08-18.
How severe is CVE-2026-75915?: High severity. CVSS v3 base score is 7.5 out of 10.