Security advisory

{
  "id": "ce317db2894b446cce2ca5339c360e1d5d36eebfb497140578003bdddeb61642",
  "url": "https://osv.dev/vulnerability/CVE-2020-10958",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10958",
    "summary": "In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.",
    "evidence": "osv:CVE-2020-10958",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-10958",
      "aliases": [
        "CVE-2020-10958"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dovecot/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4b1c00a7f20beb86b06a904ac330a75f6a2dc17c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.3.10.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.3.10",
            "2.2.20",
            "2.2.20.rc1",
            "2.2.19",
            "2.2.19.rc2",
            "2.2.19.rc1",
            "2.2.18",
            "2.2.17",
            "2.2.17.rc2",
            "2.2.17.rc1",
            "2.2.16",
            "2.2.16.rc1",
            "2.2.15",
            "2.2.14",
            "2.2.14.rc1",
            "2.2.13",
            "2.2.13.rc1",
            "2.2.12",
            "2.2.11",
            "2.2.10",
            "2.2.9",
            "2.2.8",
            "2.2.7",
            "2.2.6",
            "2.2.5",
            "2.2.4",
            "2.2.3",
            "2.2.2",
            "2.2.1",
            "2.2.0",
            "2.2.rc7",
            "2.2.rc6",
            "2.2.rc5",
            "2.2.rc4",
            "2.2.rc3",
            "2.2.rc2",
            "2.2.rc1",
            "2.2.beta2",
            "2.2.beta1",
            "2.2.alpha1",
            "2.1.rc6",
            "2.1.rc5",
            "2.1.rc4",
            "2.1.rc3",
            "2.1.rc2",
            "2.1.rc1",
            "2.1.beta1",
            "2.1.alpha2",
            "2.1.alpha1",
            "2.0.8",
            "2.0.7",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "2.0.rc6",
            "2.0.rc5",
            "2.0.rc4",
            "2.0.rc3",
            "2.0.rc2",
            "2.0.rc1",
            "2.0.beta6",
            "2.0.beta5",
            "2.0.beta4",
            "2.0.beta3",
            "2.0.beta2",
            "2.0.beta1",
            "2.0.alpha3",
            "2.0.alpha2",
            "2.0.alpha1",
            "1.2.rc1",
            "1.2.beta4",
            "1.2.beta3",
            "1.2.beta2",
            "1.2.beta1",
            "1.2.alpha5",
            "1.2.alpha4",
            "1.2.alpha3",
            "1.2.alpha2",
            "1.2.alpha1",
            "1.1.rc3",
            "1.1.rc2",
            "1.1.rc1",
            "1.1.beta16",
            "1.1.beta14",
            "1.1.beta13",
            "1.1.beta12",
            "1.1.beta11",
            "1.1.beta10",
            "1.1.beta9",
            "1.1.beta8",
            "1.1.beta6",
            "1.1.beta5",
            "1.1.beta4",
            "1.1.beta3",
            "1.1.beta2",
            "1.1.beta1",
            "1.1.alpha6",
            "1.1.alpha5",
            "1.1.alpha4",
            "1.1.alpha2",
            "1.1.alpha1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10958.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:55.543272273Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/",
        "https://usn.ubuntu.com/4361-1/",
        "https://dovecot.org/security",
        "https://www.debian.org/security/2020/dsa-4690",
        "https://www.openwall.com/lists/oss-security/2020/05/18/1"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-10958",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438443,
  "published_at": "2020-05-18T14:15:11.827+00:00"
}