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TI-2026-39061 Aliases CVE-2026-54147GHSA-vxxm-wwqh-mh47

http4k: `DigestAuthProvider.verify` ignored configured algorithm and did not bind to request URI

Priority LOW 28CWE-327Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-327.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00255 17th percentileScored 2026-11-07
Fix Fixed http4k (http4k): 4.51.0.0, 5.42.0.0, 6.50.0.0org.http4k:http4k-security-digest (Maven): 6.50.0.0, 5.42.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
http4khttp4kbefore 4.51.0.0; 5.0.0.0 to before 5.42.0.0; 6.0.0.0 to before 6.50.0.04.51.0.0, 5.42.0.0, 6.50.0.0Patch availableCNA
—org.http4k:http4k-security-digest (Maven)6.0.0.0 to before 6.50.0.06.50.0.0Patch availableGHSA-vxxm-wwqh-mh47
—org.http4k:http4k-security-digest (Maven)5.0.0.0 to before 5.42.0.05.42.0.0Patch availableGHSA-vxxm-wwqh-mh47
—org.http4k:http4k-security-digest (Maven)up to 4.48.2.0—No fix listedGHSA-vxxm-wwqh-mh47
  • http4k Vendorhttp4k Affected before 4.51.0.0; 5.0.0.0 to before 5.42.0.0; 6.0.0.0 to before 6.50.0.0 Fixed in 4.51.0.0, 5.42.0.0, 6.50.0.0 Patch available CNA
  • org.http4k:http4k-security-digest (Maven) Vendor— Affected 6.0.0.0 to before 6.50.0.0 Fixed in 6.50.0.0 Patch available GHSA-vxxm-wwqh-mh47
  • org.http4k:http4k-security-digest (Maven) Vendor— Affected 5.0.0.0 to before 5.42.0.0 Fixed in 5.42.0.0 Patch available GHSA-vxxm-wwqh-mh47
  • org.http4k:http4k-security-digest (Maven) Vendor— Affected up to 4.48.2.0 Fixed in — No fix listed GHSA-vxxm-wwqh-mh47

Remediation

  • Fix · CNA http4k (http4k) Fixed in 4.51.0.0, 5.42.0.0, 6.50.0.0
  • Fix · GHSA-vxxm-wwqh-mh47 org.http4k:http4k-security-digest (Maven) Fixed in 6.50.0.0 Advisory →
  • Fix · GHSA-vxxm-wwqh-mh47 org.http4k:http4k-security-digest (Maven) Fixed in 5.42.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54147
  2. 2026-10-03 Alias added: GHSA-vxxm-wwqh-mh47

References

Other 5

  • TI-2024-36944 http4k has a potential XXE (XML External Entity Injection) vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-83683 Missing body integrity check in http4k Digest auth-int CVSS 4.0HIGH 8.2
  • TI-2026-38700 http4k: Unbounded gzip decompression in `ServerFilters.GZip` / `RequestFilters.GunZip` allowed memory-exhaustion DoS CVSS 3.1HIGH 7.5
  • TI-2026-39062 http4k: `DigestAuthProvider.verify` did not bind to request URI CVSS 3.1HIGH 8.1
  • TI-2026-64972 http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass CVSS 4.0HIGH 8.2
  • TI-2026-64881 http4k before 6.48.0.0 Cookie Scoping Bypass via BasicCookieStorage CVSS 4.0HIGH 8.3
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences