CVE-2026-97359

10.0 CRITICAL 6% exploit odds No fix listed Injection

What it is

HFS2 version 2.4.0 and earlier contains a template injection vulnerability in the multipart upload handler that allows unauthenticated attackers to achieve remote code execution by embedding malicious template syntax in a filename. Attackers can craft a filename containing a closing template quoting sequence followed by an exec macro, which bypasses the authorization check in the dispatcher to execute arbitrary commands on the underlying host system.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 5.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-24 13:24 UTC ReservedThe CVE id was reserved by its CNA
2026-09-24 14:18 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-29 03:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-24 14:18 UTC
Last modified: 2026-09-29 03:17 UTC
Exploit probability: 5.5% · EPSS, next 30 days
Weakness: CWE-1336
Record status: Deferred

Attack profile CVSS 4.0 · 10.0

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS: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

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References

NVD record · CVE.org record