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DEBIAN-CVE-2026-44545

Type: advisorySource: OSV1 source record

daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-44545

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: osv:DEBIAN-CVE-2026-44545

python-daphne

Source reference: /affected/0/package/name

Affected versions
4.0.0-1

Source reference: /affected/0/versions

4.1.2-1

Source reference: /affected/0/versions

4.1.2-2

Source reference: /affected/0/versions

4.2.1-1

Source reference: /affected/0/versions

4.2.1-2

Source reference: /affected/0/versions

4.2.2-0.1

Source reference: /affected/0/versions

4.2.3-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

python-daphne

Source reference: /affected/1/package/name

Affected versions
4.1.2-2

Source reference: /affected/1/versions

Fixed versions
4.1.2-2+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

python-daphne

Source reference: /affected/2/package/name

Affected versions
4.1.2-2

Source reference: /affected/2/versions

4.2.1-1

Source reference: /affected/2/versions

4.2.1-2

Source reference: /affected/2/versions

Fixed versions
4.2.2-0.1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "python-daphne",
      "purl": "pkg:deb/debian/python-daphne?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "4.0.0-1",
      "4.1.2-1",
      "4.1.2-2",
      "4.2.1-1",
      "4.2.1-2",
      "4.2.2-0.1",
      "4.2.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44545.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.1.2-2+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "python-daphne",
      "purl": "pkg:deb/debian/python-daphne?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.1.2-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44545.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.2.2-0.1"
          }
        ]
      }
    ],
    "package": {
      "name": "python-daphne",
      "purl": "pkg:deb/debian/python-daphne?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "4.1.2-2",
      "4.2.1-1",
      "4.2.1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44545.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57022 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement