Is CVE-2026-75486 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75486 being exploited in the wild.

How severe is CVE-2026-75486?

High severity, with a CVSS score of 8, published 28 August 2026.

Which products and versions are affected?

Snyk Sweater Comb before 3.8.8.

Is there a fix for CVE-2026-75486?

A patch was published on 2026-08-27: Fix merged in PR #743 with commit 05a0eec Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-75486 attacked?

It is attacked with local access.

Am I affected by CVE-2026-75486?

Check whether you run Snyk Sweater Comb at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75486: Snyk Sweater Comb command injection in configuration parsing

CVE-2026-75486 · Severity: high · CVSS 8 · Published 2026-08-28

Sweater Comb is a Node.js linting tool used to validate API specifications in development repositories. An attacker who crafts a malicious repository configuration file can execute arbitrary operating system commands when a developer or CI pipeline runs the linting tool against that repository, potentially exposing credentials, SSH keys, and sensitive source code.

Vendors: Snyk.

Quick answers

Is CVE-2026-75486 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75486 being exploited in the wild.
How severe is CVE-2026-75486?: High severity, with a CVSS score of 8, published 28 August 2026.
Which products and versions are affected?: Snyk Sweater Comb before 3.8.8.
Is there a fix for CVE-2026-75486?: A patch was published on 2026-08-27: Fix merged in PR #743 with commit 05a0eec Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-75486 attacked?: It is attacked with local access.
Am I affected by CVE-2026-75486?: Check whether you run Snyk Sweater Comb at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a command injection flaw in the expectGitBranch() function in src/lint.ts. The function passes an unsanitized branch name parameter directly into child_process.exec() via a template literal without escaping or validation. The branch name is sourced from the linters.<key>.optic-ci.original field in .vervet.yaml, which is fully attacker-controlled in a malicious repository. Since child_process.exec() invokes /bin/sh -c, shell metacharacters in the branch name are interpreted and executed. An attacker can inject commands by crafting a .vervet.yaml file with malicious payloads (e.g., "main; touch /tmp/canary") and committing it to a repository. When a developer or CI pipeline runs sweater-comb lint against that repository, the injected commands execute with the privileges of the user running the tool. The fix is to replace child_process.exec() with child_process.execFile() using an argument array to prevent shell interpretation.

Affected products

Snyk Sweater Comb before 3.8.8

Timeline

2026-08-28: disclosed: CVE-2026-75486 published
2026-08-27: patched: Fix merged in PR #743 with commit 05a0eec

References

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