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DEBIAN-CVE-2026-78135

Type: advisorySource: OSV1 source record

libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-78135

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-2026-78135

strongswan

Source reference: /affected/0/package/name

Affected versions
5.9.11-1

Source reference: /affected/0/versions

5.9.11-2

Source reference: /affected/0/versions

5.9.12-1

Source reference: /affected/0/versions

5.9.13-1

Source reference: /affected/0/versions

5.9.13-2

Source reference: /affected/0/versions

5.9.8-5

Source reference: /affected/0/versions

5.9.8-5+deb12u1

Source reference: /affected/0/versions

5.9.8-5+deb12u2

Source reference: /affected/0/versions

5.9.8-5+deb12u3

Source reference: /affected/0/versions

5.9.8-5+deb12u4

Source reference: /affected/0/versions

5.9.8-5+deb12u5

Source reference: /affected/0/versions

6.0.0-1

Source reference: /affected/0/versions

6.0.0-2

Source reference: /affected/0/versions

6.0.1-1

Source reference: /affected/0/versions

6.0.1-2

Source reference: /affected/0/versions

6.0.1-3

Source reference: /affected/0/versions

6.0.1-4

Source reference: /affected/0/versions

6.0.1-5

Source reference: /affected/0/versions

6.0.1-6

Source reference: /affected/0/versions

6.0.2-1

Source reference: /affected/0/versions

6.0.3-1

Source reference: /affected/0/versions

6.0.4-1

Source reference: /affected/0/versions

6.0.5-1

Source reference: /affected/0/versions

6.0.6-1

Source reference: /affected/0/versions

6.0.7-1

Source reference: /affected/0/versions

6.1.0-1

Source reference: /affected/0/versions

6.1.0-2

Source reference: /affected/0/versions

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

strongswan

Source reference: /affected/1/package/name

Affected versions
6.0.1-6

Source reference: /affected/1/versions

6.0.1-6+deb13u1

Source reference: /affected/1/versions

6.0.1-6+deb13u2

Source reference: /affected/1/versions

6.0.1-6+deb13u4

Source reference: /affected/1/versions

6.0.1-6+deb13u5

Source reference: /affected/1/versions

6.0.1-6+deb13u6

Source reference: /affected/1/versions

Fixed versions
6.0.1-6+deb13u7

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

strongswan

Source reference: /affected/2/package/name

Affected versions
6.0.1-6

Source reference: /affected/2/versions

6.0.2-1

Source reference: /affected/2/versions

6.0.3-1

Source reference: /affected/2/versions

6.0.4-1

Source reference: /affected/2/versions

6.0.5-1

Source reference: /affected/2/versions

6.0.6-1

Source reference: /affected/2/versions

6.0.7-1

Source reference: /affected/2/versions

Fixed versions
6.1.0-1

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": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "5.9.11-1",
      "5.9.11-2",
      "5.9.12-1",
      "5.9.13-1",
      "5.9.13-2",
      "5.9.8-5",
      "5.9.8-5+deb12u1",
      "5.9.8-5+deb12u2",
      "5.9.8-5+deb12u3",
      "5.9.8-5+deb12u4",
      "5.9.8-5+deb12u5",
      "6.0.0-1",
      "6.0.0-2",
      "6.0.1-1",
      "6.0.1-2",
      "6.0.1-3",
      "6.0.1-4",
      "6.0.1-5",
      "6.0.1-6",
      "6.0.2-1",
      "6.0.3-1",
      "6.0.4-1",
      "6.0.5-1",
      "6.0.6-1",
      "6.0.7-1",
      "6.1.0-1",
      "6.1.0-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78135.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.0.1-6+deb13u7"
          }
        ]
      }
    ],
    "package": {
      "name": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "6.0.1-6",
      "6.0.1-6+deb13u1",
      "6.0.1-6+deb13u2",
      "6.0.1-6+deb13u4",
      "6.0.1-6+deb13u5",
      "6.0.1-6+deb13u6"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78135.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.1.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "strongswan",
      "purl": "pkg:deb/debian/strongswan?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "6.0.1-6",
      "6.0.2-1",
      "6.0.3-1",
      "6.0.4-1",
      "6.0.5-1",
      "6.0.6-1",
      "6.0.7-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78135.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#58334 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement