CVE-2026-97360

HFS2 2.4.0 Unauthenticated Arbitrary File Read/Write via Template Engine

CRITICAL 10.0EPSS 0.3%

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: rejetto · hfs2
CVSS v4.0 VULNCHECK: 10.0 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 VULNCHECK: 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.32% chance of exploitation in the next 30 days, 23rd percentile
Published: 2026-09-24

Proof-of-concept exploits (1)

wgetnz/hfs2/blob/master/advisories/hfs2-template-macro-missing-authorization/README.md0★ · 2026-09-24

CVE-2026-97360

Proof-of-concept exploits (1)

References

Related