async-http-client — security advisory

{
  "id": "affdd89c91696f147a4ff282da5965e820dd7bf841626a8ef8d1e81941ca9327",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-107227",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-107227",
    "summary": "The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.2.0 until 3.0.14, WebSocket permessage-deflate decompression is unbounded when compression is enabled. The inbound pipeline aggregates compressed frames before WebSocketClientCompressionHandler inflates them, so webSocketMaxFrameSize and webSocketMaxBufferSize do not bound decompressed output. A malicious WebSocket peer can send a small compressed message that expands to a very large Netty buffer and exhausts JVM heap. This issue is fixed in version 3.0.14.",
    "evidence": "osv:DEBIAN-CVE-2026-107227",
    "products": [
      {
        "name": {
          "value": "async-http-client",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.12.3-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.12.3-1+deb12u1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-107227",
      "aliases": [
        "DEBIAN-CVE-2026-107227"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "async-http-client",
            "purl": "pkg:deb/debian/async-http-client?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2.12.3-1",
            "2.12.3-1+deb12u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-107227.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-12T19:47:21.385873472Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-107227"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-107227"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-107227",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 306742,
  "published_at": "2026-10-07T21:17:14.283+00:00"
}