CVE-2026-54148
Published:September 18, 2026
Updated:September 22, 2026
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 does not compare the uri parameter in an Authorization: Digest response with the actual request URL. An attacker who captures a valid Digest authentication response can replay it against another URL served by the same realm, bypassing the per-request-URI binding and potentially gaining unauthorized read or write access. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0.
Affected Packages
https://github.com/http4k/http4k.git (GITHUB):
Affected version(s) >=5.0.0.0 <5.42.0.0Fix Suggestion:
Update to version 5.42.0.0https://github.com/http4k/http4k.git (GITHUB):
Affected version(s) >=6.0.0.0 <6.50.0.0Fix Suggestion:
Update to version 6.50.0.0org.http4k:http4k-security-digest (JAVA):
Affected version(s) >=6.0.0.0 <6.50.0.0Fix Suggestion:
Update to version 6.50.0.0org.http4k:http4k-security-digest (JAVA):
Affected version(s) >=5.0.0.0 <5.42.0.0Fix Suggestion:
Update to version 5.42.0.0Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Authentication Bypass by Capture-replay
EPSS
Base Score:
0.33