Authenticated internal-service access via unresolved URL-upload hostnames
Published Feb 3, 2026 · Updated Feb 3, 2026
SSRF in Tiny File Manager through 2.6 allows remote authenticated users to reach internal services through the URL upload feature. The upload handler in tinyfilemanager.php checks only the parsed hostname against literal localhost and loopback patterns, then passes accepted URLs to PHP copy() without resolving and validating the destination address. A low-privileged account can submit a crafted hostname such as www.127.0.0.1.example.com to scan ports or retrieve content from internal HTTP services into the file manager.
Summary
What happened
SSRF in Tiny File Manager through 2.6 allows remote authenticated users to reach internal services through the URL upload feature. The upload handler in tinyfilemanager.php checks only the parsed hostname against literal localhost and loopback patterns, then passes accepted URLs to PHP copy() without resolving and validating the destination address. A low-privileged account can submit a crafted hostname such as www.127.0.0.1.example.com to scan ports or retrieve content from internal HTTP services into the file manager.
The record
- CVE
- CVE-2025-46651
- Published
- Feb 3, 2026
- Updated
- Feb 3, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 3, 2026CVE publishedPublication date reported by the CVE source.
- Feb 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
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Attacks
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