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golang-golang-x-net-dev vulnerability

Type: advisorySource: OSV1 source record

It was discovered that Go Networking incorrectly handled certain Punycode-encoded labels in the idna package. An attacker could possibly use this issue to bypass hostname-based access restrictions.

Announced Source revision 1
Original source ↗

USN-8416-1

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:USN-8416-1

golang-golang-x-net-dev

Source reference: /affected/0/package/name

Affected versions
1:0.0+git20170629.c81e7f2+dfsg-1ubuntu1

Source reference: /affected/0/versions

1:0.0+git20170629.c81e7f2+dfsg-1ubuntu2

Source reference: /affected/0/versions

1:0.0+git20170629.c81e7f2+dfsg-2

Source reference: /affected/0/versions

1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm1

Source reference: /affected/0/versions

1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2

Source reference: /affected/0/versions

Fixed versions
1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

golang-golang-x-net-dev

Source reference: /affected/1/package/name

Affected versions
1:0.0+git20190811.74dc4d7+dfsg-1

Source reference: /affected/1/versions

1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm1

Source reference: /affected/1/versions

1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2

Source reference: /affected/1/versions

Fixed versions
1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3

Source reference: /affected/1/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": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3"
          }
        ]
      }
    ],
    "package": {
      "name": "golang-golang-x-net-dev",
      "purl": "pkg:deb/ubuntu/golang-golang-x-net-dev?arch=source&distro=esm-apps%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "1:0.0+git20170629.c81e7f2+dfsg-1ubuntu1",
      "1:0.0+git20170629.c81e7f2+dfsg-1ubuntu2",
      "1:0.0+git20170629.c81e7f2+dfsg-2",
      "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm1",
      "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8416-1.json",
      "cves_map": {
        "cves": [
          {
            "id": "CVE-2026-39821",
            "severity": [
              {
                "type": "CVSS_V3",
                "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
              },
              {
                "type": "CVSS_V3",
                "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N"
              },
              {
                "type": "Ubuntu",
                "score": "high"
              }
            ]
          }
        ],
        "ecosystem": "Ubuntu:Pro:18.04:LTS"
      }
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-go.net-dev",
          "binary_version": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3"
        },
        {
          "binary_name": "golang-golang-x-net-dev",
          "binary_version": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm3"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3"
          }
        ]
      }
    ],
    "package": {
      "name": "golang-golang-x-net-dev",
      "purl": "pkg:deb/ubuntu/golang-golang-x-net-dev?arch=source&distro=esm-apps%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "1:0.0+git20190811.74dc4d7+dfsg-1",
      "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm1",
      "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8416-1.json",
      "cves_map": {
        "cves": [
          {
            "id": "CVE-2026-39821",
            "severity": [
              {
                "type": "CVSS_V3",
                "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
              },
              {
                "type": "CVSS_V3",
                "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N"
              },
              {
                "type": "Ubuntu",
                "score": "high"
              }
            ]
          }
        ],
        "ecosystem": "Ubuntu:Pro:20.04:LTS"
      }
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-go.net-dev",
          "binary_version": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3"
        },
        {
          "binary_name": "golang-golang-x-net-dev",
          "binary_version": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm3"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#51920 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement