CVE-2026-49143
CVE-2026-49143 · BrowserStack Runner 0.9.5 Unauthenticated RCE via /_log HTTP Handler
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BrowserStack Runner through 0.9.5 contains a remote code execution vulnerability in the /_log HTTP handler that allows unauthenticated network-adjacent attackers to execute arbitrary code by submitting crafted JSON request bodies to the handler, which passes user-supplied data to vm.runInNewContext() combined with eval(). Attackers can escape the Node.js vm sandbox by leveraging a host-context Function reference through util.format to access the host process via this.constructor.constructor, achieving full remote code execution on the underlying system without any authentication.
CVSS 8.7 · Élevée · EPSS 0,8%
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
browserstack-runner
- Versions du logiciel
- ≥ 0, ≤ 0.9.5: Concernée (semver)
Aucun correctif publié
browserstack-runner npm
- Plages de versions concernées
- SEMVER: ≤ 0.9.5
Aucun correctif publié