CVE-2026-48723 Command injection in browserstack-cypress-cli
Attackers can execute arbitrary OS commands by injecting shell metacharacters into the cypress_config_file parameter in BrowserStack Cypress CLI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-48723?
CVE-2026-48723 is a high-severity command injection vulnerability in browserstack-cypress-cli, published on 15 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The browserstack-cypress-cli is BrowserStack's CLI which allows users to run Cypress tests on BrowserStack. Versions prior to 1.36.4 are vulnerable to OS command injection via the cypress_config_file configuration parameter. In readCypressConfigUtil.js, the loadJsFile() function constructs a shell command by interpolating the user-controlled cypress_config_filepath value into a template literal, then executes it via child_process.execSync(). Shell metacharacters in the config path (specifically " and ;) allow breaking out of the quoted argument and injecting arbitrary commands. This issue has been fixed in version 1.36.6.
Weakness: CWE-78
Which versions are affected by CVE-2026-48723?
How do I fix CVE-2026-48723?
No fix has been published for CVE-2026-48723 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-2026-48723 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48723 exists.
Sources
Also known as GHSA-fh4c-mffm-8xhf.