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DEBIAN-CVE-2026-54283

Type: advisorySource: OSV1 source record

Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts max_fields and max_part_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An unauthenticated attacker can therefore send a urlencoded body with an arbitrarily large number of fields or an arbitrarily large field, even when the application configured limits it believed would apply. This vulnerability is fixed in 1.3.1.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-54283

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-2026-54283

starlette

Source reference: /affected/0/package/name

Affected versions
0.26.1-1

Source reference: /affected/0/versions

0.26.1-1+deb12u1

Source reference: /affected/0/versions

Fixed versions
0.26.1-1+deb12u2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

starlette

Source reference: /affected/1/package/name

Affected versions
0.46.1-3

Source reference: /affected/1/versions

0.46.1-3+deb13u1

Source reference: /affected/1/versions

0.46.1-3+deb13u2

Source reference: /affected/1/versions

Fixed versions
0.46.1-3+deb13u3

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

starlette

Source reference: /affected/2/package/name

Affected versions
0.46.1-3

Source reference: /affected/2/versions

0.50.0-1

Source reference: /affected/2/versions

1.0.0-1

Source reference: /affected/2/versions

1.1.0-1

Source reference: /affected/2/versions

Fixed versions
1.3.1-1

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"
          },
          {
            "fixed": "0.26.1-1+deb12u2"
          }
        ]
      }
    ],
    "package": {
      "name": "starlette",
      "purl": "pkg:deb/debian/starlette?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.26.1-1",
      "0.26.1-1+deb12u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54283.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.46.1-3+deb13u3"
          }
        ]
      }
    ],
    "package": {
      "name": "starlette",
      "purl": "pkg:deb/debian/starlette?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.46.1-3",
      "0.46.1-3+deb13u1",
      "0.46.1-3+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54283.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.3.1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "starlette",
      "purl": "pkg:deb/debian/starlette?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.46.1-3",
      "0.50.0-1",
      "1.0.0-1",
      "1.1.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54283.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57812 · Revision 1
Added to Heist Feed
Publisher date
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