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CVE-2026-48723 browserstack CVE debrief

CVE-2026-48723 is a HIGH-severity vulnerability in the browserstack-cypress-cli, a command-line interface for running Cypress tests on BrowserStack. The vulnerability, which has a CVSS score of 7.8, allows for OS command injection via the cypress_config_file configuration parameter. This is possible because the loadJsFile() function in readCypressConfigUtil.js constructs a shell command by interpolating the user-controlled cypress_config_filepath value into a template literal, then executes it via child_process.execSync(). An attacker can inject arbitrary commands by including shell metacharacters (specifically and ;) in the config path. The issue was fixed in version 1.36.6.

Vendor
browserstack
Product
browserstack-cypress-cli
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-16
Advisory published
2026-06-15
Advisory updated
2026-06-16

Who should care

Users of browserstack-cypress-cli, especially those who use versions prior to 1.36.4, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The browserstack-cypress-cli is vulnerable to OS command injection. The loadJsFile() function in readCypressConfigUtil.js does not properly sanitize user input, allowing an attacker to inject arbitrary shell commands.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to version 1.36.6 or later
  • Use a secure configuration file path
  • Validate and sanitize user input

Evidence notes

The CVE record [cve-org] and NVD detail [nvd] provide information about the vulnerability. Additional details can be found in the source references [ref-4] and [ref-5].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48723 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48723

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48723 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48723

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/browserstack/browserstack-cypress-cli/commit/6dbf8f9374c0e25eac818fbcb95f5705ded71710

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://github.com/browserstack/browserstack-cypress-cli/security/advisories/GHSA-fh4c-mffm-8xhf

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.