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DEBIAN-CVE-2026-35387

Type: advisorySource: OSV1 source record

OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-35387

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-2026-35387

openssh

Source reference: /affected/0/package/name

Affected versions
1:9.2p1-2

Source reference: /affected/0/versions

1:9.2p1-2+deb12u1

Source reference: /affected/0/versions

1:9.2p1-2+deb12u2

Source reference: /affected/0/versions

1:9.2p1-2+deb12u3

Source reference: /affected/0/versions

1:9.2p1-2+deb12u4

Source reference: /affected/0/versions

1:9.2p1-2+deb12u5

Source reference: /affected/0/versions

1:9.2p1-2+deb12u6

Source reference: /affected/0/versions

1:9.2p1-2+deb12u7

Source reference: /affected/0/versions

1:9.2p1-2+deb12u8

Source reference: /affected/0/versions

1:9.2p1-2+deb12u9

Source reference: /affected/0/versions

Fixed versions
1:9.2p1-2+deb12u10

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

openssh

Source reference: /affected/1/package/name

Affected versions
1:10.0p1-7

Source reference: /affected/1/versions

1:10.0p1-7+deb13u1

Source reference: /affected/1/versions

1:10.0p1-7+deb13u2

Source reference: /affected/1/versions

Fixed versions
1:10.0p1-7+deb13u3

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

openssh

Source reference: /affected/2/package/name

Affected versions
1:10.0p1-7

Source reference: /affected/2/versions

1:10.0p1-8

Source reference: /affected/2/versions

1:10.1p1-1

Source reference: /affected/2/versions

1:10.1p1-2

Source reference: /affected/2/versions

1:10.2p1-1

Source reference: /affected/2/versions

1:10.2p1-2

Source reference: /affected/2/versions

1:10.2p1-2~bpo13+1

Source reference: /affected/2/versions

1:10.2p1-3

Source reference: /affected/2/versions

1:10.2p1-4

Source reference: /affected/2/versions

1:10.2p1-5

Source reference: /affected/2/versions

1:10.2p1-6

Source reference: /affected/2/versions

1:10.2p1-6~bpo13+1

Source reference: /affected/2/versions

1:10.3p1-1~bpo13+1

Source reference: /affected/2/versions

Fixed versions
1:10.3p1-1

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": "1:9.2p1-2+deb12u10"
          }
        ]
      }
    ],
    "package": {
      "name": "openssh",
      "purl": "pkg:deb/debian/openssh?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:9.2p1-2",
      "1:9.2p1-2+deb12u1",
      "1:9.2p1-2+deb12u2",
      "1:9.2p1-2+deb12u3",
      "1:9.2p1-2+deb12u4",
      "1:9.2p1-2+deb12u5",
      "1:9.2p1-2+deb12u6",
      "1:9.2p1-2+deb12u7",
      "1:9.2p1-2+deb12u8",
      "1:9.2p1-2+deb12u9"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35387.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:10.0p1-7+deb13u3"
          }
        ]
      }
    ],
    "package": {
      "name": "openssh",
      "purl": "pkg:deb/debian/openssh?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:10.0p1-7",
      "1:10.0p1-7+deb13u1",
      "1:10.0p1-7+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35387.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:10.3p1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "openssh",
      "purl": "pkg:deb/debian/openssh?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:10.0p1-7",
      "1:10.0p1-8",
      "1:10.1p1-1",
      "1:10.1p1-2",
      "1:10.2p1-1",
      "1:10.2p1-2",
      "1:10.2p1-2~bpo13+1",
      "1:10.2p1-3",
      "1:10.2p1-4",
      "1:10.2p1-5",
      "1:10.2p1-6",
      "1:10.2p1-6~bpo13+1",
      "1:10.3p1-1~bpo13+1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35387.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56402 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-35387 · Revision 1Source updated