CVE-2026-61505
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedRejetto HFS 3.0.0 through 3.2.0 allows path traversal through the lang query parameter, permitting a remote unauthenticated attacker to read certain JSON files outside the shared folders. Exploitation is constrained to files matching a narrow naming and format pattern, limiting practical impact.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceRejetto HFS versions 3.0.0 through 3.2.0 contain a path traversal vulnerability in the lang query parameter, allowing unauthenticated remote attackers to read certain JSON files outside the intended shared folders. The attack is constrained to files matching specific naming and format patterns, limiting practical impact.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify HFS installation and versionLocate the HFS executable (hfs.exe) on the system and check its version properties, or query the running HFS web interface banner via HTTP request to the serverAffected if The installed version is 3.0.0, 3.1.x, or 3.2.0 (versions 3.0.0 through 3.2.0 inclusive)
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Confirm HFS web interface is accessibleVerify the HFS HTTP service is running by attempting to access the server on its configured port (commonly port 80)Affected if The HFS web interface responds to HTTP requests, exposing the vulnerable endpoint
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Identify shared folders configurationExamine the HFS configuration file (usually hfs.ini or stored in the HFS data folder) to determine which folders are shared and their access permissionsAffected if Any folders are shared via HFS, as the vulnerability allows reading files outside intended shared folders
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Test the lang parameter for path traversalSend an HTTP GET request to the HFS server with a path traversal pattern in the lang parameter, for example: GET /?lang=..\..\..\somefile.json (or URL-encoded equivalent)Affected if The server responds with content from files outside the intended document root, indicating successful path traversal
A system is affected if it runs Rejetto HFS version 3.0.0 through 3.2.0 with its web interface accessible and the lang parameter permits path traversal to read JSON files outside shared folders.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to HFS version 3.2.1 or later, which addresses the path traversal vulnerability. If immediate patching is not possible, consider restricting access to the HFS interface or implementing WAF rules to block path traversal patterns in query parameters.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-61505 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-61505 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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