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GHSA-p28p-j94q-pg32
org.http4k/http4k-security-digestorg.http4k/http4k-security-digestorg.http4k/http4k-security-digestImpact
An issue in DigestAuthProvider.verify:
The uri parameter in the client's Authorization: Digest … response was not checked against the actual request URL. A captured Digest authentication response could be replayed against any other URL served by the same realm, breaking the per-request-URL binding the Digest scheme assumes.
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:
- Rejects credentials whose
uriparameter does not match the request URL.
Workarounds
For deployments that cannot upgrade immediately:
- URI binding gap: place Digest auth behind a reverse proxy that pins requests to a single URL.
References
- Vulnerability first present:
8a52b615b1 - URI binding fix:
725f1b9697 - Fix release: v6.50.0.0
- Background: RFC 7616 — HTTP Digest Access Authentication
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
- CVE-2026-54148Alias
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