http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass
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.
CVE-2026-100834
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100834
http4k
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
http4k
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
http4k
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "http4k",
"product": "http4k",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "6.48.0.0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "6.48.0.0",
"versionType": "custom"
}
],
"packageURL": "pkg:maven/org.http4k/http4k-security-digest",
"defaultStatus": "unaffected"
},
{
"vendor": "http4k",
"product": "http4k",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "5.42.0.0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "5.42.0.0",
"versionType": "custom"
}
],
"packageURL": "pkg:maven/org.http4k/http4k-security-digest",
"defaultStatus": "unaffected"
},
{
"vendor": "http4k",
"product": "http4k",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.51.0.0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "4.51.0.0",
"versionType": "custom"
}
],
"packageURL": "pkg:maven/org.http4k/http4k-security-digest",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100834
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4653 · Revision 1
- Added to Heist Feed
- Publisher date