ubuntu-cve-2026-43506
Vulnerability from osv_ubuntu
Published
2026-05-01 15:16
Modified
2026-05-20 15:28
Summary
Details

An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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": "prosody",
            "binary_version": "0.9.10-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@0.9.10-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.8-1",
        "0.9.9-1",
        "0.9.10-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "0.10.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@0.10.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.12-2",
        "0.10.0-1",
        "0.10.0-1build1",
        "0.10.0-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "0.11.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@0.11.4-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.2-1",
        "0.11.3-1",
        "0.11.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "0.11.13-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@0.11.13-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.10-1",
        "0.11.10-1build1",
        "0.11.10-1build2",
        "0.11.11-1",
        "0.11.11-2",
        "0.11.12-1",
        "0.11.13-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "0.12.4-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@0.12.4-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.12.3-1",
        "0.12.4-1",
        "0.12.4-1build1",
        "0.12.4-1build2",
        "0.12.4-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "13.0.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@13.0.1-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.12.5-1build1",
        "13.0.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "prosody",
            "binary_version": "13.0.4-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "prosody",
        "purl": "pkg:deb/ubuntu/prosody@13.0.4-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "13.0.1-1",
        "13.0.2-1",
        "13.0.2-1build1",
        "13.0.3-1",
        "13.0.4-1",
        "13.0.4-2"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.",
  "id": "UBUNTU-CVE-2026-43506",
  "modified": "2026-05-20T15:28:57Z",
  "published": "2026-05-01T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43506"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43506"
    },
    {
      "type": "REPORT",
      "url": "https://prosody.im/security/advisory_735dd9d3/"
    },
    {
      "type": "REPORT",
      "url": "https://hg.prosody.im/trunk/rev/836a70deb3c9"
    },
    {
      "type": "REPORT",
      "url": "https://hg.prosody.im/trunk/rev/e27d94d8f505"
    },
    {
      "type": "REPORT",
      "url": "https://hg.prosody.im/trunk/rev/041c7ff18f76"
    },
    {
      "type": "REPORT",
      "url": "https://hg.prosody.im/trunk/rev/374b72785488"
    }
  ],
  "related": [],
  "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:L",
      "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-2026-43506"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.


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