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AsyncHttpClient: Cookie Domain attribute is not checked against the public suffix list, so a cookie can be set for co.uk

Type: advisorySource: Official CVE List1 source record

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, ThreadSafeCookieStore validates Domain attributes with domain matching but does not reject public suffixes. A host beneath a suffix such as co.uk can set a cookie for that suffix, after which the shared cookie store sends it to unrelated hosts under the suffix. This can inject or overwrite session-relevant cookie values across origins. This issue is fixed in versions 3.0.13 and 2.16.1.

Announced Source revision 1
Original source ↗

CVE-2026-107280

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-2026-107280

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, < 3.0.13"
      },
      {
        "status": "affected",
        "version": ">= 2.0.0, < 2.16.1"
      }
    ]
  }
]
Related CVEs
CVE-2026-107280

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#13082 · Revision 1
Added to Heist Feed
Publisher date
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