CVE-2026-97359
HFS2 2.4.0 RCE via Multipart Upload Filename Template Injection
Updated
- CVSS 4.0
- 10.0 CRITICAL
- EPSS
- 5.5% (93rd pct)
- CISA KEV
- Not listed
- Published
- 2026-09-24
- Weakness
- CWE-1336
Description
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.
Key Findings
as of 2026-11-12- Its current EPSS score (5.5%) is higher than that of 18% of CISA KEV entries.
Severity
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HOpen in CVSS calculator CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HOpen in CVSS calculator Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| rejetto | rejetto hfs2 | 2.0.0 to 2.4.0 |
References
2 linksExploits & PoCs
Third-party advisories
Record Details
- Published
- 2026-09-24
- Last updated
- 2026-09-29
- Assigner (CNA)
- VulnCheck
- Credited to
- wgetnz; VulnCheck
More from rejetto
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). Alert titles and links from CISA cybersecurity alerts. This site is not affiliated with or endorsed by MITRE, NVD, CISA, or FIRST.