CVE-2026-75486 Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name
Attackers controlling the .vervet.yaml file can execute arbitrary OS commands via unsanitized branch names in Snyk Sweater Comb.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-75486?
CVE-2026-75486 is a high-severity command injection vulnerability in snyk sweater-comb, published on 28 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-75486?
How do I fix CVE-2026-75486?
No fix has been published for CVE-2026-75486 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-75486 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75486 exists.
Sources
Also known as GHSA-rcgj-xg9w-8x5p.