CVE-2026-54148 Details
Description
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.
A vulnerability exists in the http4k library, specifically in the http4k-security-digest module, in versions prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0. The issue arises in the DigestAuthProvider.verify method, which fails to properly compare the uri parameter in the Authorization: Digest response with the actual request URL. This oversight allows an attacker to capture a valid Digest authentication response and replay it against another URL within the same realm, bypassing the expected per-request URI binding. As a result, unauthorized read or write access could be gained.
Users can upgrade to http4k versions 4.51.0.0, 5.42.0.0, or 6.50.0.0, where this vulnerability has been fixed. For those unable to upgrade immediately, a temporary workaround is to place Digest authentication behind a reverse proxy that enforces a consistent URL for requests.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 22, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/github/advisory-database/pull/9477 | [email protected] | AdvisoryIssue Tracking |
| https://github.com/http4k/http4k/commit/725f1b96978dd433348e2b149c1e72b9f5147c90 | [email protected] | Source CodeVendor |
| https://github.com/http4k/http4k/releases/tag/6.50.0.0 | [email protected] | Release NotesVendor |
| https://github.com/http4k/http4k/security/advisories/GHSA-p28p-j94q-pg32 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-294 | Authentication Bypass by Capture-replay | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| http4k | <= 6.49.0.0 |
CPE
Remediation
| |
| http4k-security-digest | <= 5.41.0.0 <= 4.50.0.0 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 22, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | [email protected] |