CVE-2025-6152: Steel Browser

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability, which was classified as critical, was found in Steel Browser up to 0.1.3. This affects the function handleFileUpload of the file api/src/modules/files/files.routes.ts. The manipulation of the argument filename leads to path traversal. It is possible to initiate the attack remotely. The patch is named 7ba93a10000fb77ee01731478ef40551a27bd5b9. It is recommended to apply a patch to fix this issue.

Affected products

• Steel Browser: version 0.1.1 only; version 0.1.2 only; version 0.1.3 only

Published 2025-06-17. Last modified 2026-06-17.