What is CVE-2025-6152?

CVE-2025-6152 is a medium-severity vulnerability in Steel Browser, classified under Path Traversal. CVSS score: 6.3/10. Published 2025-06-17.

How severe is CVE-2025-6152?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2025-6152 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in Steel Browser

CVE-2025-6152

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2025-06-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (46.1th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Steel Browser — versions 0.1.0, 0.1.1, 0.1.2

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/steel-dev/steel-browser/issues/129 (issue-tracking, Exploit, Issue Tracking)
github.com/steel-dev/steel-browser/issues/129 (issue-tracking, Exploit, Issue Tracking)
github.com/steel-dev/steel-browser/commit/7ba93a10000fb77ee01731478ef40551a27bd… (Patch, patch)

Frequently asked questions

What is CVE-2025-6152?: CVE-2025-6152 is a medium-severity vulnerability in Steel Browser, classified under Path Traversal. CVSS score: 6.3/10. Published 2025-06-17.
How severe is CVE-2025-6152?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2025-6152 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.