Vulnerability · Published Nov 2, 2026 · Assigned by VulnCheck

CVE-2026-120316http4k before 6.62.0.0-ee Path Traversal via ThymeleafTemplates Template Resolution

Medium 5.9

In plain English

A medium-severity path traversal in http4k from http4k. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.3%top 76.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
http4k	http4k	0 – before 6.62.0.0-ee

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-wq4x-r858-gmmj) vendor-advisory
VulnCheck Advisory: http4k before 6.62.0.0-ee Path Traversal via ThymeleafTemplates Template Resolution third-party-advisory