CVE-2026-85717

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.14.5 to 2.16.0 and from 3.0.9 to 3.0.11, a client configured with a client-wide Realm and redirect following can disclose credentials after a cross-origin redirect because the Interceptors authentication path falls back to the client configuration after redirect handling clears the per-exchange realm. If the attacker-controlled target returns 401, the client can send Basic or Digest credentials or a Negotiate or NTLM token to that origin. Per-request realms are stripped correctly, and this issue is a residual bypass of the earlier cross-origin credential-stripping fixes. This issue is fixed in versions 2.16.1 and 3.0.12.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-522"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85717.json"
}

References

Affected packages

Git / github.com/asynchttpclient/async-http-client

Affected ranges

Type

GIT

Repo

https://github.com/asynchttpclient/async-http-client

Events

Introduced

ae557ad35246721c09dafb2976609cd0004e78ae

Fixed

d1f0ccec417092098d40242fee7dfac84bb3c21f

Introduced

1ab1ea31fcaa0b016130d9f08cd5334feb2d1d93

Fixed

c07038b44e5206375662b46859672e8f1df9f05a

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "2.14.5"
        },
        {
            "fixed": "2.16.1"
        },
        {
            "introduced": "3.0.9"
        },
        {
            "fixed": "3.0.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

async-http-client-project-2.*

async-http-client-project-2.14.5

async-http-client-project-2.15.0

async-http-client-project-2.16.0

async-http-client-project-3.*

async-http-client-project-3.0.10

async-http-client-project-3.0.11

async-http-client-project-3.0.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85717.json"

vanir_signatures

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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-85717-26220b3f",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/asynchttpclient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f",
        "target": {
            "file": "client/src/main/java/org/asynchttpclient/cookie/ThreadSafeCookieStore.java"
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        "source": "https://github.com/asynchttpclient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f",
        "target": {
            "file": "client/src/main/java/org/asynchttpclient/cookie/ThreadSafeCookieStore.java",
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vanir_signatures_modified

"2026-09-18T08:05:15Z"