CVE-2026-75486
Medium
Elevated severity or exploit probability.
CVSS base
8.0
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
2.3%
82.7th percentile
CISA KEV
Not listed
Weakness / dates
CWE-78
Published 2026-08-28 · modified 2026-09-08
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.
References
- https://github.com/snyk/sweater-comb/commit/05a0eec4f2acb9ce6d4814016b475504fc64eab2
- https://github.com/snyk/sweater-comb/pull/743
- https://github.com/snyk/sweater-comb/releases/tag/v3.8.8
- https://www.vulncheck.com/advisories/synk-sweater-comb-command-injection-via-vervet-yaml-branch-name
- https://github.com/snyk/sweater-comb/pull/743