AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the password in cleartext
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13 and 2.16.1, Realm.Builder treats a Digest challenge that yields no usable nonce as a Basic challenge. A malicious origin or proxy can label a challenge Digest while omitting or emptying the nonce, causing the client to resend the username and password using reversible Basic authentication. Both origin and proxy challenge parsers are affected. This issue is fixed in versions 3.0.13 and 2.16.1.
CVE-2026-107231
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-2026-107231
async-http-client
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
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "AsyncHttpClient",
"product": "async-http-client",
"versions": [
{
"status": "affected",
"version": ">= 3.0.0.Beta1, < 3.0.13"
},
{
"status": "affected",
"version": ">= 2.0.0, < 2.16.1"
}
]
}
]- Related CVEs
- CVE-2026-107231
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #16551 · Revision 1
- Added to Heist Feed
- Publisher date