{
  "cveId": "CVE-2026-49837",
  "url": "https://patchblox.com/security/cve/CVE-2026-49837",
  "summary": "CVE-2026-49837 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-49837, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "gobgp: GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language",
  "description": "GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Versions prior to 4.6.0 contain a BGP OPEN capability parsing issue where several concrete capability decoders may parse data from the full remaining capability buffer instead of the slice bounded by the declared capability length, \u0060CapLen\u0060. A malformed BGP OPEN message can cause bytes from a following capability to be interpreted as part of the current capability. The most security-relevant case is the 4-octet AS capability, where a capability with \u0060CapLen == 0\u0060 may cause the parser to read bytes from the following capability as the 4-octet AS value. This parsed value may later affect peer AS validation during BGP session establishment. Version 4.6.0 patches the issue.",
  "published": "2026-08-10T17:34:15Z",
  "severity": "medium",
  "cvss": 5.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00332,
  "epssPercentile": 0.26565,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "gobgp",
      "release": "Debian 14",
      "fixedVersion": "4.6.0-1",
      "fix": "DEBIAN-CVE-2026-49837",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-49837",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260727T201416-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21551-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21551-1",
      "released": "2026-08-10T17:38:07Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "sles 16.0",
      "fixedVersion": "0.0.20260727T201416-160000.1.1",
      "fix": "SUSE-SU-2026:23227-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23227-1",
      "released": "2026-08-10T17:34:15Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}