rust-quinn-proto — security advisory

{
  "id": "ccf90ffbe720ac74b4c8a2eff389f39f968e0a0b5cfc0a0aa90f4f8fc167f346",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-31812",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-31812",
    "summary": "Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Prior to 0.11.14, a remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication. This vulnerability is fixed in 0.11.14.",
    "evidence": "osv:UBUNTU-CVE-2026-31812",
    "products": [
      {
        "name": {
          "value": "rust-quinn-proto",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.10.2-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.10.5-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.10.6-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rust-quinn-proto",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.10.6-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.11.9-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rust-quinn-proto",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.11.9-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.11.14-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.11.16-1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rust-quinn-proto",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.11.9-1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "0.11.9-3",
            "evidence": "/affected/3/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-31812",
      "aliases": [
        "UBUNTU-CVE-2026-31812"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-quinn-proto",
            "purl": "pkg:deb/ubuntu/rust-quinn-proto?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "0.10.2-1",
            "0.10.5-2",
            "0.10.6-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31812.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-quinn-proto-dev",
                "binary_version": "0.10.6-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-quinn-proto",
            "purl": "pkg:deb/ubuntu/rust-quinn-proto?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "0.10.6-1",
            "0.11.9-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31812.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-quinn-proto-dev",
                "binary_version": "0.11.9-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-quinn-proto",
            "purl": "pkg:deb/ubuntu/rust-quinn-proto?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "0.11.9-3",
            "0.11.14-1",
            "0.11.16-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31812.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-quinn-proto-dev",
                "binary_version": "0.11.16-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-quinn-proto",
            "purl": "pkg:deb/ubuntu/rust-quinn-proto?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "0.11.9-1",
            "0.11.9-3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31812.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-quinn-proto-dev",
                "binary_version": "0.11.9-3"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:58:09.040959766Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-31812"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-31812",
        "https://www.cve.org/CVERecord?id=CVE-2026-31812",
        "https://rustsec.org/advisories/RUSTSEC-2026-0037.html",
        "https://github.com/quinn-rs/quinn/security/advisories/GHSA-6xvm-j4wr-6v98",
        "https://github.com/quinn-rs/quinn/pull/2558"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-31812",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 358232,
  "published_at": "2026-03-10T22:16:00+00:00"
}