What’s Vulnerable › Vulnerabilities

CVE-2026-97360: HFS2 2.4.0 Unauthenticated Arbitrary File Read/Write via Template Engine

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-09-24
• Weakness: CWE-862

Description

HFS2 version 2.4.0 and earlier contains an unauthenticated arbitrary file access vulnerability that allows unauthenticated attackers to read, write, append, and delete files anywhere the HFS service account has filesystem access outside the shared folder. Attackers can exploit the macro dispatcher's lack of authorization model combined with the path resolver's failure to confine absolute paths to manipulate the template engine and compromise the confidentiality, integrity, and availability of the host.

Affected products

• rejetto hfs2: from 2.0.0 through 2.4.0

References

• https://github.com/wgetnz/hfs2/blob/master/advisories/hfs2-template-macro-missing-authorization/README.md
• https://www.vulncheck.com/advisories/hfs2-unauthenticated-arbitrary-file-read-write-via-template-engine

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