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CVE-2026-100834

http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass PUBLISHED

Description (CNA)

http4k's Digest authentication module (org.http4k:http4k-security-digest) before versions 6.48.0.0, 5.42.0.0 and 4.51.0.0 defaults the nonceVerifier parameter of ServerFilters.DigestAuth and DigestAuthProvider to { true }, so every nonce is accepted regardless of its value, age, or prior use. Applications relying on this default have no replay protection on Digest authentication: an attacker who can capture a valid 'Authorization: Digest' response (for example by observing network traffic or reading logs) can replay it indefinitely against the same protected resource.

Affected (CNA)

Vendor / productVersions
http4k / http4kaffected 0 before 6.48.0.0; unaffected 6.48.0.0
http4k / http4kaffected 0 before 5.42.0.0; unaffected 5.42.0.0
http4k / http4kaffected 0 before 4.51.0.0; unaffected 4.51.0.0

CWE

CWE-294

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.