What’s Vulnerable › Vulnerabilities

CVE-2026-48723: BrowserStack Cypress CL: Command Injection via cypress_config_file leads to arbitrary code execution through malicious browserstack.json

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-15 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• browserstack-cypress-cli: before 1.36.6

References

• https://github.com/browserstack/browserstack-cypress-cli/commit/6dbf8f9374c0e25eac818fbcb95f5705ded71710
• https://github.com/browserstack/browserstack-cypress-cli/security/advisories/GHSA-fh4c-mffm-8xhf
• https://github.com/browserstack/browserstack-cypress-cli/security/advisories/GHSA-fh4c-mffm-8xhf

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