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ALPINE-CVE-2026-39863

Type: advisorySource: OSV1 source record

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.1.1, 6.0.6, and 5.8.8, an out-of-bounds access in the core of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted data packet sent over TCP. The issue impacts Kamailio instances having TCP or TLS listeners. This vulnerability is fixed in 5.1.1, 6.0.6, and 5.8.8.

Announced Source revision 1
Original source ↗

ALPINE-CVE-2026-39863

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:ALPINE-CVE-2026-39863

kamailio

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
5.4.5-r2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

kamailio

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
5.8.8-r0

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

kamailio

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
5.8.8-r0

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

kamailio

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
6.0.6-r0

Source reference: /affected/3/ranges

Prerequisites
Not stated in this record

kamailio

Source reference: /affected/4/package/name

Affected versions
Not stated in this record
Fixed versions
6.0.6-r0

Source reference: /affected/4/ranges

Prerequisites
Not stated in this record

kamailio

Source reference: /affected/5/package/name

Affected versions
Not stated in this record
Fixed versions
6.0.6-r0

Source reference: /affected/5/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": "6.0.0"
          },
          {
            "fixed": "5.4.5-r2"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.14"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.0.0"
          },
          {
            "fixed": "5.8.8-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.20"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.0.0"
          },
          {
            "fixed": "5.8.8-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.21"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.0.0"
          },
          {
            "fixed": "6.0.6-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.22"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.0.0"
          },
          {
            "fixed": "6.0.6-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.23"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.0.0"
          },
          {
            "fixed": "6.0.6-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "kamailio",
      "purl": "pkg:apk/alpine/kamailio?arch=source",
      "ecosystem": "Alpine:v3.24"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-39863.json"
    },
    "ecosystem_specific": {}
  }
]

Publisher severity

No explicit severity was provided.

Event
#54325 · Revision 1
Added to Heist Feed
Publisher date
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