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DEBIAN-CVE-2026-58055

Type: advisorySource: OSV1 source record

nghttp2's nghttpx proxy through 1.69.0 forwards an HTTP/1.1 Upgrade request that also carries a Content-Length header and body onto reusable keep-alive backend connections, re-adding the Upgrade and Connection headers while passing Content-Length verbatim. A backend that resolves the resulting ambiguous message in the attacker's favor enables HTTP request/response smuggling and cross-client response-queue poisoning.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-58055

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-2026-58055

nghttp2

Source reference: /affected/0/package/name

Affected versions
1.52.0-1

Source reference: /affected/0/versions

1.52.0-1+deb12u1

Source reference: /affected/0/versions

1.52.0-1+deb12u2

Source reference: /affected/0/versions

1.52.0-1+deb12u3

Source reference: /affected/0/versions

1.53.0-1

Source reference: /affected/0/versions

1.54.0-1

Source reference: /affected/0/versions

1.55.1-1

Source reference: /affected/0/versions

1.56.0-1

Source reference: /affected/0/versions

1.57.0-1

Source reference: /affected/0/versions

1.58.0-1

Source reference: /affected/0/versions

1.59.0-1

Source reference: /affected/0/versions

1.60.0-1

Source reference: /affected/0/versions

1.61.0-1

Source reference: /affected/0/versions

1.62.1-1

Source reference: /affected/0/versions

1.62.1-2

Source reference: /affected/0/versions

1.63.0-1

Source reference: /affected/0/versions

1.64.0-1

Source reference: /affected/0/versions

1.64.0-1.1

Source reference: /affected/0/versions

1.68.0-1

Source reference: /affected/0/versions

1.68.0-2

Source reference: /affected/0/versions

1.68.1-1

Source reference: /affected/0/versions

1.69.0-1

Source reference: /affected/0/versions

1.70.0-1

Source reference: /affected/0/versions

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

nghttp2

Source reference: /affected/1/package/name

Affected versions
1.64.0-1.1

Source reference: /affected/1/versions

1.64.0-1.1+deb13u1

Source reference: /affected/1/versions

1.68.0-1

Source reference: /affected/1/versions

1.68.0-2

Source reference: /affected/1/versions

1.68.1-1

Source reference: /affected/1/versions

1.69.0-1

Source reference: /affected/1/versions

1.70.0-1

Source reference: /affected/1/versions

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

nghttp2

Source reference: /affected/2/package/name

Affected versions
1.64.0-1.1

Source reference: /affected/2/versions

1.68.0-1

Source reference: /affected/2/versions

1.68.0-2

Source reference: /affected/2/versions

1.68.1-1

Source reference: /affected/2/versions

1.69.0-1

Source reference: /affected/2/versions

Fixed versions
1.70.0-1

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": "nghttp2",
      "purl": "pkg:deb/debian/nghttp2?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.52.0-1",
      "1.52.0-1+deb12u1",
      "1.52.0-1+deb12u2",
      "1.52.0-1+deb12u3",
      "1.53.0-1",
      "1.54.0-1",
      "1.55.1-1",
      "1.56.0-1",
      "1.57.0-1",
      "1.58.0-1",
      "1.59.0-1",
      "1.60.0-1",
      "1.61.0-1",
      "1.62.1-1",
      "1.62.1-2",
      "1.63.0-1",
      "1.64.0-1",
      "1.64.0-1.1",
      "1.68.0-1",
      "1.68.0-2",
      "1.68.1-1",
      "1.69.0-1",
      "1.70.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "nghttp2",
      "purl": "pkg:deb/debian/nghttp2?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.64.0-1.1",
      "1.64.0-1.1+deb13u1",
      "1.68.0-1",
      "1.68.0-2",
      "1.68.1-1",
      "1.69.0-1",
      "1.70.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.70.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "nghttp2",
      "purl": "pkg:deb/debian/nghttp2?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.64.0-1.1",
      "1.68.0-1",
      "1.68.0-2",
      "1.68.1-1",
      "1.69.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58055.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57973 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement