Vulnerability in Http4k
CVE-2026-120317
http4k from 4.9.10.0 before 6.60.0.0 contains a missing integrity check vulnerability because DigestEncoder computes the auth-int digest without hashing the request entity body. On-path attackers on non-TLS channels can rewrite the body of authenticated requests while keeping the Authorization header valid, executing state-changing actions as the victim.
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:N/I:H/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-9xx4-xjpj-xqcf (vendor-advisory)
- www.vulncheck.com/advisories/http4k-4.9.10.0-before-6.60.0.0-digest-auth-int-mi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120317?
- CVE-2026-120317 is a medium-severity vulnerability in Http4k, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.9/10. Published 2026-11-02.
- How severe is CVE-2026-120317?
- Medium severity. CVSS v3 base score is 5.9 out of 10.