Path Traversal in Http4k
CVE-2026-120316
http4k before 6.62.0.0-ee contains a path traversal vulnerability in ThymeleafTemplates Caching and HotReload that allows unauthenticated attackers to read files outside baseTemplateDir by supplying ../ segments in ViewModel.template() values. Attackers can influence request-driven template selection so Thymeleaf's FileTemplateResolver resolves escaped paths without containment checks, disclosing any file readable by the server process.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/http4k/http4k/security/advisories/GHSA-wq4x-r858-gmmj (vendor-advisory)
- www.vulncheck.com/advisories/http4k-before-6.62.0.0-ee-path-traversal-via-thyme… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120316?
- CVE-2026-120316 is a medium-severity vulnerability in Http4k, classified under Path Traversal. CVSS score: 5.9/10. Published 2026-11-02.
- How severe is CVE-2026-120316?
- Medium severity. CVSS v3 base score is 5.9 out of 10.