CVE-2026-61505: Rejetto HFS < 3.2.1 Limited File Disclosure via Path Traversal in lang Parameter

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-13 · updated 2026-10-24
Weakness: CWE-22

Description

Rejetto 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.

Affected products

rejetto hfs: from 3.0.0 before 3.2.1 — fixed in 3.2.1

How to fix

Upgrade to a fixed version: rejetto hfs 3.2.1. Check the vendor advisory for mitigations.

References

https://github.com/rejetto/hfs/releases/tag/v3.2.1
https://www.vulncheck.com/advisories/rejetto-hfs-limited-file-disclosure-via-path-traversal-in-lang-parameter

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