CVE-2026-75486
Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name
- State
- Published
- Severity
- 8.5 High
- Published
- Aug 28, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 17, 2026
Description
Synk Sweater Comb before 3.8.8 contains a command injection vulnerability that allows an attacker who controls the .vervet.yaml configuration file to execute arbitrary OS commands by injecting malicious input into the linters.<key>.optic-ci.original branch name field. The expectGitBranch() function in src/lint.ts passes the unsanitized branch name directly into child_process.exec() via an unescaped template literal, enabling arbitrary command execution when the lint command is run against the repository.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.0 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
sweater-combsnyk |
|
References
- Sweater Comb v3.8.8 Release Notesrelease-notes
- Pull Requestissue-trackingpatch
- Patch Commitpatch
- https://www.vulncheck.com/advisories/synk-sweater-comb-command-injection-via-vervet-yaml-branch-namethird-party-advisory
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