medium

CVE-2026-54147

Maven · org.http4k:http4k-security-digest

Summary

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

Severity
medium
CVSS
6.5
EPSS
0.3% (p17)
CWE
CWE-327
Also known as
GHSA-vxxm-wwqh-mh47
Published
2026-08-17
Updated
2026-08-17

Advisory details

Impact

An issue in DigestAuthProvider.verify:

Algorithm silently forced to MD5. The configured algorithm parameter was ignored — every verification used MD5 regardless of configuration. Deployments believing they were running SHA-256 Digest auth were silently inheriting MD5's collision weaknesses, including documented attack paths against Digest schemes that rely on the hash being collision-resistant.

Who is affected: any application using http4k-security-digest for HTTP Digest authentication. The bug has been present since DigestAuthProvider was introduced (commit 8a52b615b1, 2021).

Patches

Line Fixed in Edition
v6.x (Community) 6.50.0.0 Community
v5.x (LTS) 5.42.0.0 Enterprise — contact enterprise@http4k.org (if Digest auth is present in your v5.x line)
v4.x (LTS) 4.51.0.0 Enterprise — contact enterprise@http4k.org (if Digest auth is present in your v4.x line)

The fix:

Workarounds

For deployments that cannot upgrade immediately:

References

References

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.