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High, CVSS 8.7amended

CodeWhale: js_execution leaks parent environment to model context via missing env scrub

CVE-2026-75915GHSA-h539-c7r8-3xq4

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm codewhale

    Affected
    >= 0.8.41, < 0.8.64
    Fixed in
    0.8.64

  • npm deepseek-tui

    Affected
    >= 0.8.32, < 0.8.41
    Fixed in
    0.8.41

  • crates.io codewhale-tui

    Affected
    >= 0.8.41, < 0.8.64
    Fixed in
    0.8.64

  • crates.io deepseek-tui

    Affected
    >= 0.8.32, <= 0.8.41
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2026-75915: 0.68% estimated exploitation activity in the next 30 days; percentile 52.38 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Maintainer resolution The CodeWhale maintainers validated this report. The affected package ranges are recorded in the advisory metadata. Version 0.8.64 contains the fix in commit 26de44a8bd5051f8f944ea60b2c37ae1d2b7d25e. Users should upgrade to 0.8.64 or later. The original reporter analysis is preserved below. Summary jsexecution exposes parent process environment to model-provided JavaScript The jsexecution tool spawns Node with tokio::process::Command::new without calling the childenv scrubber that execshell, the Python REPL, and the MCP launcher all use. Model-provided JavaScript reads process.env and the values flow back to the parent transcript as the tool's stdout, exposing API keys, cloud credentials, and forge tokens to the next model turn. Details In crates/tui/src/tools/jsexecution.rs (v0.8.37, lines 91-105): The Command is built without cmd.envclear() and without the project's crate::childenv::applytotokiocommand helper. Every variable in the parent process environment…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-h539-c7r8-3xq4

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-h539-c7r8-3xq4

Agent brief

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# Patch Next advisory brief: CVE-2026-75915

Advisory: CodeWhale: js_execution leaks parent environment to model context via missing env scrub
IDs: CVE-2026-75915, GHSA-h539-c7r8-3xq4
Record: https://patchnext.com/advisories/cve-2026-75915 (revision 3, source checked 26 Oct 2026, 13:02 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: codewhale 0.8.64; deepseek-tui 0.8.41; codewhale-tui 0.8.64. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm codewhale: affected >= 0.8.41, < 0.8.64; fixed in 0.8.64
- npm deepseek-tui: affected >= 0.8.32, < 0.8.41; fixed in 0.8.41
- crates.io codewhale-tui: affected >= 0.8.41, < 0.8.64; fixed in 0.8.64
- crates.io deepseek-tui: affected >= 0.8.32, <= 0.8.41

## Suggested inspection (read-only)
- `npm ls codewhale --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- `npm ls deepseek-tui --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- crates.io codewhale-tui: check the installed version with your package manager.
- crates.io deepseek-tui: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on codewhale, deepseek-tui, codewhale-tui.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-h539-c7r8-3xq4 (OSV record GHSA-h539-c7r8-3xq4 lists affected ranges: crates.io deepseek-tui >=0.8.32 =0.8.32 =0.8.41 =0.8.41 <0.8.64 (fixed))
- Verified: https://github.com/advisories/GHSA-h539-c7r8-3xq4 (GitHub-reviewed advisory GHSA-h539-c7r8-3xq4 lists affected ranges: crates.io deepseek-tui >=0.8.32 =0.8.32 =0.8.41 =0.8.41 <0.8.64)

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