Steel Browser files.routes.ts handleFileUpload path traversal
Priority MEDIUM 57CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.006 48th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Steel | Browser | 0.1.0; 0.1.1; 0.1.2; 0.1.3 | — | No fix listed | CNA |
- Browser VendorSteel Affected 0.1.0; 0.1.1; 0.1.2; 0.1.3 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6152
- 2026-10-03 Alias added: GHSA-wcpr-fw9g-mjcm
References
Sources
- CVE-2025-6152 · CVE Program
- CVE-2025-6152 · NVD
- FIRST EPSS
- GHSA-wcpr-fw9g-mjcm · GitHub Advisory Database · CC BY 4.0
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