ubuntu-cve-2026-33814
Vulnerability from osv_ubuntu
Published
2026-05-07 20:16
Modified
2026-06-30 16:20
Summary
Details

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-go.net-dev",
            "binary_version": "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "golang-golang-x-net-dev",
            "binary_version": "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
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        "name": "golang-golang-x-net-dev",
        "purl": "pkg:deb/ubuntu/golang-golang-x-net-dev@1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0+git20150226.3d87fd6-3",
        "0.0+git20151007.b846920+dfsg-1",
        "1:0.0+git20150817.66f0418-1",
        "1:0.0+git20160110.4fd4a9f-1",
        "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm1",
        "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "juju",
            "binary_version": "2.3.7-0ubuntu0.16.04.1+esm2"
          },
          {
            "binary_name": "juju-2.0",
            "binary_version": "2.3.7-0ubuntu0.16.04.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "juju-core",
        "purl": "pkg:deb/ubuntu/juju-core@2.3.7-0ubuntu0.16.04.1+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.24.6-0ubuntu3",
        "1.25.0-0ubuntu1",
        "1.25.0-0ubuntu2",
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        "2.0~beta6-0ubuntu1.16.04.1",
        "2.0~beta7-0ubuntu1.16.04.1",
        "2.0~beta12-0ubuntu1.16.04.1",
        "2.0~beta15-0ubuntu2.16.04.1",
        "2.0.0-0ubuntu0.16.04.2",
        "2.0.2-0ubuntu0.16.04.1",
        "2.0.2-0ubuntu0.16.04.2",
        "2.3.1-0ubuntu0.16.04.1",
        "2.3.2-0ubuntu0.16.04.1",
        "2.3.7-0ubuntu0.16.04.1",
        "2.3.7-0ubuntu0.16.04.1+esm1",
        "2.3.7-0ubuntu0.16.04.1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
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          {
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          {
            "binary_name": "lxc2",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
          },
          {
            "binary_name": "lxd",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
          },
          {
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          {
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        "name": "lxd",
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      },
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          ],
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        "0.20-0ubuntu4",
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        "2.0.0~beta2-0ubuntu1",
        "2.0.0~beta2-0ubuntu2",
        "2.0.0~beta3-0ubuntu1",
        "2.0.0~beta3-0ubuntu2",
        "2.0.0~beta3-0ubuntu3",
        "2.0.0~beta3-0ubuntu4",
        "2.0.0~beta4-0ubuntu1",
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        "2.0.0~beta4-0ubuntu3",
        "2.0.0~beta4-0ubuntu4",
        "2.0.0~beta4-0ubuntu5",
        "2.0.0~beta4-0ubuntu6",
        "2.0.0~beta4-0ubuntu7",
        "2.0.0~rc1-0ubuntu1",
        "2.0.0~rc1-0ubuntu2",
        "2.0.0~rc1-0ubuntu3",
        "2.0.0~rc2-0ubuntu2",
        "2.0.0~rc2-0ubuntu3",
        "2.0.0~rc3-0ubuntu1",
        "2.0.0~rc3-0ubuntu2",
        "2.0.0~rc3-0ubuntu3",
        "2.0.0~rc3-0ubuntu4",
        "2.0.0~rc4-0ubuntu1",
        "2.0.0~rc5-0ubuntu1",
        "2.0.0~rc6-0ubuntu1",
        "2.0.0~rc6-0ubuntu2",
        "2.0.0~rc7-0ubuntu1",
        "2.0.0~rc7-0ubuntu2",
        "2.0.0~rc8-0ubuntu1",
        "2.0.0~rc8-0ubuntu2",
        "2.0.0~rc8-0ubuntu3",
        "2.0.0~rc8-0ubuntu5",
        "2.0.0~rc8-0ubuntu6",
        "2.0.0~rc8-0ubuntu7",
        "2.0.0~rc9-0ubuntu2",
        "2.0.0~rc9-0ubuntu3",
        "2.0.0~rc9-0ubuntu4",
        "2.0.0~rc9-0ubuntu5",
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        "2.0.2-0ubuntu1~16.04.1",
        "2.0.3-0ubuntu1~ubuntu16.04.2",
        "2.0.4-0ubuntu1~ubuntu16.04.1",
        "2.0.5-0ubuntu1~ubuntu16.04.1",
        "2.0.8-0ubuntu1~ubuntu16.04.1",
        "2.0.8-0ubuntu1~ubuntu16.04.2",
        "2.0.9-0ubuntu1~16.04.1",
        "2.0.9-0ubuntu1~16.04.2",
        "2.0.10-0ubuntu1~16.04.1",
        "2.0.10-0ubuntu1~16.04.2",
        "2.0.11-0ubuntu1~16.04.2",
        "2.0.11-0ubuntu1~16.04.4",
        "2.0.11-0ubuntu1~16.04.4+esm1",
        "2.0.11-0ubuntu1~16.04.4+esm2",
        "2.0.11-0ubuntu1~16.04.4+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "containerd",
            "binary_version": "1.2.6-0ubuntu1~16.04.6+esm7"
          },
          {
            "binary_name": "golang-github-docker-containerd-dev",
            "binary_version": "1.2.6-0ubuntu1~16.04.6+esm7"
          }
        ]
      },
      "package": {
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        "name": "containerd",
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      "versions": [
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        "1.2.6-0ubuntu1~16.04.3",
        "1.2.6-0ubuntu1~16.04.4",
        "1.2.6-0ubuntu1~16.04.5",
        "1.2.6-0ubuntu1~16.04.6",
        "1.2.6-0ubuntu1~16.04.6+esm1",
        "1.2.6-0ubuntu1~16.04.6+esm2",
        "1.2.6-0ubuntu1~16.04.6+esm4",
        "1.2.6-0ubuntu1~16.04.6+esm5",
        "1.2.6-0ubuntu1~16.04.6+esm6"
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    {
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      "package": {
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        "name": "google-guest-agent",
        "purl": "pkg:deb/ubuntu/google-guest-agent@20240716.00-0ubuntu1~16.04.0+esm3?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
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          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "20201217.02-0ubuntu1~16.04.0",
        "20230426.00-0ubuntu2~16.04.3",
        "20231004.02-0ubuntu1~16.04.1",
        "20231004.02-0ubuntu1~16.04.2",
        "20240716.00-0ubuntu1~16.04.0",
        "20240716.00-0ubuntu1~16.04.0+esm1",
        "20240716.00-0ubuntu1~16.04.0+esm2",
        "20240716.00-0ubuntu1~16.04.0+esm3"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lxd",
            "binary_version": "3.0.3-0ubuntu1~18.04.2+esm3"
          },
          {
            "binary_name": "lxd-client",
            "binary_version": "3.0.3-0ubuntu1~18.04.2+esm3"
          },
          {
            "binary_name": "lxd-tools",
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "lxd",
        "purl": "pkg:deb/ubuntu/lxd@3.0.3-0ubuntu1~18.04.2+esm3?arch=source\u0026distro=esm-infra/bionic"
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      "ranges": [
        {
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          ],
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      "versions": [
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        "3.0.0-0ubuntu1",
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    {
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        "binaries": [
          {
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          {
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        ]
      },
      "package": {
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        "name": "containerd",
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      },
      "ranges": [
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          ],
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      "versions": [
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    },
    {
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          },
          {
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        ]
      },
      "package": {
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    },
    {
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          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
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        "purl": "pkg:deb/ubuntu/google-guest-agent@20241011.01-0ubuntu1~18.04.0+esm3?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
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          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
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    },
    {
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      },
      "package": {
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      "ranges": [
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            {
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        "0.9.2~20.04.2ubuntu0.1+esm1"
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    },
    {
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        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "containerd",
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      },
      "ranges": [
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      "versions": [
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        "1.3.2-0ubuntu1",
        "1.3.3-0ubuntu1",
        "1.3.3-0ubuntu2",
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        "1.5.9-0ubuntu1~20.04.4",
        "1.5.9-0ubuntu1~20.04.5",
        "1.5.9-0ubuntu1~20.04.6",
        "1.6.12-0ubuntu1~20.04.1",
        "1.6.12-0ubuntu1~20.04.3",
        "1.6.12-0ubuntu1~20.04.5",
        "1.6.12-0ubuntu1~20.04.6",
        "1.6.12-0ubuntu1~20.04.7",
        "1.6.12-0ubuntu1~20.04.8",
        "1.6.12-0ubuntu1~20.04.8+esm1"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
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            "binary_version": "20250116.00-0ubuntu1~20.04.0+esm3"
          }
        ]
      },
      "package": {
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        "0.16.4",
        "0.16.4ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "containerd",
            "binary_version": "2.2.2-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "containerd-app",
        "purl": "pkg:deb/ubuntu/containerd-app@2.2.2-0ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.2-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.3-0ubuntu3",
        "2.2.1-0ubuntu1",
        "2.2.2-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "containerd-stable",
            "binary_version": "2.2.2-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "containerd-stable",
        "purl": "pkg:deb/ubuntu/containerd-stable@2.2.2-0ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.2-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.3-0ubuntu1",
        "2.1.5-0ubuntu1",
        "2.2.1-0ubuntu1",
        "2.2.2-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-golang-x-net-dev",
            "binary_version": "1:0.27.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "golang-golang-x-net",
        "purl": "pkg:deb/ubuntu/golang-golang-x-net@1:0.27.0-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.27.0-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "google-guest-agent",
            "binary_version": "20250506.01-0ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "google-guest-agent",
        "purl": "pkg:deb/ubuntu/google-guest-agent@20250506.01-0ubuntu2.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20250506.01-0ubuntu1",
        "20250506.01-0ubuntu2",
        "20250506.01-0ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.",
  "id": "UBUNTU-CVE-2026-33814",
  "modified": "2026-06-30T16:20:55Z",
  "published": "2026-05-07T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33814"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33814"
    },
    {
      "type": "REPORT",
      "url": "https://go-review.googlesource.com/c/go/+/761581"
    },
    {
      "type": "REPORT",
      "url": "https://go-review.googlesource.com/c/net/+/761640"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/golang/go/issues/78476"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/cl/761581"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/cl/761640"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/78476"
    },
    {
      "type": "REPORT",
      "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
    },
    {
      "type": "REPORT",
      "url": "https://pkg.go.dev/vuln/GO-2026-4918"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8430-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8471-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8472-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8473-1"
    }
  ],
  "related": [
    "USN-8430-1",
    "USN-8471-1",
    "USN-8472-1",
    "USN-8473-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33814"
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.