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DEBIAN-CVE-2026-54464

Type: advisorySource: OSV1 source record

### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. ### Patches The issue has been patched in version 0.8.1, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-54464

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-2026-54464

ruby-websocket-driver

Source reference: /affected/0/package/name

Affected versions
0.6.3-3

Source reference: /affected/0/versions

0.8.0-1

Source reference: /affected/0/versions

0.8.1-1

Source reference: /affected/0/versions

0.8.2-1

Source reference: /affected/0/versions

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

ruby-websocket-driver

Source reference: /affected/1/package/name

Affected versions
0.6.3-3

Source reference: /affected/1/versions

0.8.0-1

Source reference: /affected/1/versions

0.8.1-1

Source reference: /affected/1/versions

0.8.2-1

Source reference: /affected/1/versions

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

ruby-websocket-driver

Source reference: /affected/2/package/name

Affected versions
0.6.3-3

Source reference: /affected/2/versions

0.8.0-1

Source reference: /affected/2/versions

Fixed versions
0.8.1-1

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": "ruby-websocket-driver",
      "purl": "pkg:deb/debian/ruby-websocket-driver?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.6.3-3",
      "0.8.0-1",
      "0.8.1-1",
      "0.8.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54464.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-websocket-driver",
      "purl": "pkg:deb/debian/ruby-websocket-driver?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.6.3-3",
      "0.8.0-1",
      "0.8.1-1",
      "0.8.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54464.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.8.1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-websocket-driver",
      "purl": "pkg:deb/debian/ruby-websocket-driver?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.6.3-3",
      "0.8.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54464.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57831 · Revision 1
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