CVE-2026-54147
6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Summary
http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0, DigestAuthProvider.verify in http4k-security-digest ignores its configured algorithm parameter and verifies every Digest response with hardcoded MD5. Deployments configured for SHA-256 therefore receive weaker MD5-based verification, exposing Digest authentication to collision-related attack paths that depend on the hash function's collision resistance. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| http4k | http4k | < 4.51.0.0 | affected |
| http4k | http4k | >= 5.0.0.0, < 5.42.0.0 | affected |
| http4k | http4k | >= 6.0.0.0, < 6.50.0.0 | affected |
Weaknesses
- CWE-327: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47
- https://github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c
- https://github.com/http4k/http4k/releases/tag/6.50.0.0
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