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DEBIAN-CVE-2026-21714

Type: advisorySource: OSV1 source record

A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up. This vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-21714

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-2026-21714

nodejs

Source reference: /affected/0/package/name

Affected versions
18.13.0+dfsg1-1

Source reference: /affected/0/versions

18.13.0+dfsg1-1.1

Source reference: /affected/0/versions

18.19.0+dfsg-1

Source reference: /affected/0/versions

18.19.0+dfsg-2

Source reference: /affected/0/versions

18.19.0+dfsg-3

Source reference: /affected/0/versions

18.19.0+dfsg-4

Source reference: /affected/0/versions

18.19.0+dfsg-5

Source reference: /affected/0/versions

18.19.0+dfsg-6

Source reference: /affected/0/versions

18.19.0+dfsg-6~deb12u1

Source reference: /affected/0/versions

18.19.0+dfsg-6~deb12u2

Source reference: /affected/0/versions

18.19.1+dfsg-1

Source reference: /affected/0/versions

18.19.1+dfsg-2

Source reference: /affected/0/versions

18.19.1+dfsg-3

Source reference: /affected/0/versions

18.19.1+dfsg-3.1

Source reference: /affected/0/versions

18.19.1+dfsg-4

Source reference: /affected/0/versions

18.19.1+dfsg-6

Source reference: /affected/0/versions

18.20.1+dfsg-1

Source reference: /affected/0/versions

18.20.1+dfsg-2

Source reference: /affected/0/versions

18.20.1+dfsg-3

Source reference: /affected/0/versions

18.20.1+dfsg-4

Source reference: /affected/0/versions

18.20.4+dfsg-1~deb12u1

Source reference: /affected/0/versions

Fixed versions
18.20.4+dfsg-1~deb12u2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

nodejs

Source reference: /affected/1/package/name

Affected versions
20.19.2+dfsg-1

Source reference: /affected/1/versions

20.19.2+dfsg-1+deb13u1

Source reference: /affected/1/versions

Fixed versions
20.19.2+dfsg-1+deb13u2

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

nodejs

Source reference: /affected/2/package/name

Affected versions
20.19.2+dfsg-1

Source reference: /affected/2/versions

20.19.4+dfsg-1

Source reference: /affected/2/versions

20.19.5+dfsg+~cs20.19.12-1

Source reference: /affected/2/versions

20.19.5+dfsg+~cs20.19.12-2

Source reference: /affected/2/versions

20.19.5+dfsg+~cs20.19.12-3

Source reference: /affected/2/versions

20.19.5+dfsg+~cs20.19.12-4

Source reference: /affected/2/versions

20.19.5+dfsg+~cs20.19.24-1

Source reference: /affected/2/versions

22.12.0+dfsg-1

Source reference: /affected/2/versions

22.12.0+dfsg-2

Source reference: /affected/2/versions

22.12.0+dfsg-3

Source reference: /affected/2/versions

22.14.0+dfsg-1

Source reference: /affected/2/versions

22.18.0+dfsg+~cs22.17.2-1

Source reference: /affected/2/versions

22.18.0+dfsg+~cs22.17.2-2

Source reference: /affected/2/versions

22.18.0+dfsg-1

Source reference: /affected/2/versions

22.19.0+dfsg+~cs22.18.0-1

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-1

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-2

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-3

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-4

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-5

Source reference: /affected/2/versions

22.21.1+dfsg+~cs22.19.0-6

Source reference: /affected/2/versions

22.22.0+dfsg+~cs22.19.13-1

Source reference: /affected/2/versions

22.22.0+dfsg+~cs22.19.13-2

Source reference: /affected/2/versions

22.22.0+dfsg+~cs22.19.6-1

Source reference: /affected/2/versions

22.22.1+dfsg+~cs22.19.15-1

Source reference: /affected/2/versions

Fixed versions
22.22.2+dfsg+~cs22.19.15-1

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"
          },
          {
            "fixed": "18.20.4+dfsg-1~deb12u2"
          }
        ]
      }
    ],
    "package": {
      "name": "nodejs",
      "purl": "pkg:deb/debian/nodejs?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "18.13.0+dfsg1-1",
      "18.13.0+dfsg1-1.1",
      "18.19.0+dfsg-1",
      "18.19.0+dfsg-2",
      "18.19.0+dfsg-3",
      "18.19.0+dfsg-4",
      "18.19.0+dfsg-5",
      "18.19.0+dfsg-6",
      "18.19.0+dfsg-6~deb12u1",
      "18.19.0+dfsg-6~deb12u2",
      "18.19.1+dfsg-1",
      "18.19.1+dfsg-2",
      "18.19.1+dfsg-3",
      "18.19.1+dfsg-3.1",
      "18.19.1+dfsg-4",
      "18.19.1+dfsg-6",
      "18.20.1+dfsg-1",
      "18.20.1+dfsg-2",
      "18.20.1+dfsg-3",
      "18.20.1+dfsg-4",
      "18.20.4+dfsg-1~deb12u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21714.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "20.19.2+dfsg-1+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "nodejs",
      "purl": "pkg:deb/debian/nodejs?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "20.19.2+dfsg-1",
      "20.19.2+dfsg-1+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21714.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "22.22.2+dfsg+~cs22.19.15-1"
          }
        ]
      }
    ],
    "package": {
      "name": "nodejs",
      "purl": "pkg:deb/debian/nodejs?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "20.19.2+dfsg-1",
      "20.19.4+dfsg-1",
      "20.19.5+dfsg+~cs20.19.12-1",
      "20.19.5+dfsg+~cs20.19.12-2",
      "20.19.5+dfsg+~cs20.19.12-3",
      "20.19.5+dfsg+~cs20.19.12-4",
      "20.19.5+dfsg+~cs20.19.24-1",
      "22.12.0+dfsg-1",
      "22.12.0+dfsg-2",
      "22.12.0+dfsg-3",
      "22.14.0+dfsg-1",
      "22.18.0+dfsg+~cs22.17.2-1",
      "22.18.0+dfsg+~cs22.17.2-2",
      "22.18.0+dfsg-1",
      "22.19.0+dfsg+~cs22.18.0-1",
      "22.21.1+dfsg+~cs22.19.0-1",
      "22.21.1+dfsg+~cs22.19.0-2",
      "22.21.1+dfsg+~cs22.19.0-3",
      "22.21.1+dfsg+~cs22.19.0-4",
      "22.21.1+dfsg+~cs22.19.0-5",
      "22.21.1+dfsg+~cs22.19.0-6",
      "22.22.0+dfsg+~cs22.19.13-1",
      "22.22.0+dfsg+~cs22.19.13-2",
      "22.22.0+dfsg+~cs22.19.6-1",
      "22.22.1+dfsg+~cs22.19.15-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21714.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57418 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement