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DEBIAN-CVE-2026-35536

Type: advisorySource: OSV1 source record

In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-35536

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-2026-35536

python-tornado

Source reference: /affected/0/package/name

Affected versions
6.2.0-3

Source reference: /affected/0/versions

6.2.0-3+deb12u1

Source reference: /affected/0/versions

6.2.0-3+deb12u2

Source reference: /affected/0/versions

6.2.0-3+deb12u3

Source reference: /affected/0/versions

6.2.0-3+deb12u4

Source reference: /affected/0/versions

6.3.2-1

Source reference: /affected/0/versions

6.4.0-1

Source reference: /affected/0/versions

6.4.0-2

Source reference: /affected/0/versions

6.4.1-1

Source reference: /affected/0/versions

6.4.1-2

Source reference: /affected/0/versions

6.4.1-3

Source reference: /affected/0/versions

6.4.2-1

Source reference: /affected/0/versions

6.4.2-2

Source reference: /affected/0/versions

6.4.2-3

Source reference: /affected/0/versions

6.5.2-1

Source reference: /affected/0/versions

6.5.2-2

Source reference: /affected/0/versions

6.5.2-3

Source reference: /affected/0/versions

6.5.4-0.1

Source reference: /affected/0/versions

6.5.4-1

Source reference: /affected/0/versions

6.5.5-1

Source reference: /affected/0/versions

6.5.5-2

Source reference: /affected/0/versions

6.5.5-3

Source reference: /affected/0/versions

6.5.5-4

Source reference: /affected/0/versions

6.5.5-5

Source reference: /affected/0/versions

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

python-tornado

Source reference: /affected/1/package/name

Affected versions
6.4.2-3

Source reference: /affected/1/versions

6.4.2-3+deb13u1

Source reference: /affected/1/versions

6.4.2-3+deb13u2

Source reference: /affected/1/versions

6.5.2-1

Source reference: /affected/1/versions

6.5.2-2

Source reference: /affected/1/versions

6.5.2-3

Source reference: /affected/1/versions

6.5.4-0.1

Source reference: /affected/1/versions

6.5.4-1

Source reference: /affected/1/versions

6.5.5-1

Source reference: /affected/1/versions

6.5.5-2

Source reference: /affected/1/versions

6.5.5-3

Source reference: /affected/1/versions

6.5.5-4

Source reference: /affected/1/versions

6.5.5-5

Source reference: /affected/1/versions

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

python-tornado

Source reference: /affected/2/package/name

Affected versions
6.4.2-3

Source reference: /affected/2/versions

6.5.2-1

Source reference: /affected/2/versions

6.5.2-2

Source reference: /affected/2/versions

6.5.2-3

Source reference: /affected/2/versions

6.5.4-0.1

Source reference: /affected/2/versions

6.5.4-1

Source reference: /affected/2/versions

Fixed versions
6.5.5-1

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-tornado",
      "purl": "pkg:deb/debian/python-tornado?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "6.2.0-3",
      "6.2.0-3+deb12u1",
      "6.2.0-3+deb12u2",
      "6.2.0-3+deb12u3",
      "6.2.0-3+deb12u4",
      "6.3.2-1",
      "6.4.0-1",
      "6.4.0-2",
      "6.4.1-1",
      "6.4.1-2",
      "6.4.1-3",
      "6.4.2-1",
      "6.4.2-2",
      "6.4.2-3",
      "6.5.2-1",
      "6.5.2-2",
      "6.5.2-3",
      "6.5.4-0.1",
      "6.5.4-1",
      "6.5.5-1",
      "6.5.5-2",
      "6.5.5-3",
      "6.5.5-4",
      "6.5.5-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35536.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "python-tornado",
      "purl": "pkg:deb/debian/python-tornado?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "6.4.2-3",
      "6.4.2-3+deb13u1",
      "6.4.2-3+deb13u2",
      "6.5.2-1",
      "6.5.2-2",
      "6.5.2-3",
      "6.5.4-0.1",
      "6.5.4-1",
      "6.5.5-1",
      "6.5.5-2",
      "6.5.5-3",
      "6.5.5-4",
      "6.5.5-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35536.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.5.5-1"
          }
        ]
      }
    ],
    "package": {
      "name": "python-tornado",
      "purl": "pkg:deb/debian/python-tornado?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "6.4.2-3",
      "6.5.2-1",
      "6.5.2-2",
      "6.5.2-3",
      "6.5.4-0.1",
      "6.5.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35536.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57556 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement