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DEBIAN-CVE-2026-49017

Type: advisorySource: OSV1 source record

In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-49017

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-2026-49017

swift

Source reference: /affected/0/package/name

Affected versions
2.35.0-4

Source reference: /affected/0/versions

2.35.1-0+deb13u1

Source reference: /affected/0/versions

Fixed versions
2.35.1-0+deb13u2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

swift

Source reference: /affected/1/package/name

Affected versions
2.35.0-4

Source reference: /affected/1/versions

2.35.1-1

Source reference: /affected/1/versions

2.35.1-2

Source reference: /affected/1/versions

2.36.0-1

Source reference: /affected/1/versions

2.36.0-2

Source reference: /affected/1/versions

2.36.0-3

Source reference: /affected/1/versions

2.36.0-4

Source reference: /affected/1/versions

2.36.0-5

Source reference: /affected/1/versions

2.36.0-6

Source reference: /affected/1/versions

2.36.0-7

Source reference: /affected/1/versions

2.36.0-8

Source reference: /affected/1/versions

2.37.0-1

Source reference: /affected/1/versions

2.37.1-1

Source reference: /affected/1/versions

2.37.1-2

Source reference: /affected/1/versions

2.37.1-3

Source reference: /affected/1/versions

Fixed versions
2.37.1-4

Source reference: /affected/1/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": "2.35.1-0+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "swift",
      "purl": "pkg:deb/debian/swift?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.35.0-4",
      "2.35.1-0+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49017.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.37.1-4"
          }
        ]
      }
    ],
    "package": {
      "name": "swift",
      "purl": "pkg:deb/debian/swift?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.35.0-4",
      "2.35.1-1",
      "2.35.1-2",
      "2.36.0-1",
      "2.36.0-2",
      "2.36.0-3",
      "2.36.0-4",
      "2.36.0-5",
      "2.36.0-6",
      "2.36.0-7",
      "2.36.0-8",
      "2.37.0-1",
      "2.37.1-1",
      "2.37.1-2",
      "2.37.1-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49017.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#15059 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-49017 · Revision 1Source updated