Security advisory

{
  "id": "e75d9d0f75234407e5ade6d49bbacd720aca632f0b652feea838fe89a8dc82ce",
  "url": "https://osv.dev/vulnerability/CVE-2021-36489",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-36489",
    "summary": "Buffer Overflow vulnerability in Allegro through 5.2.6 allows attackers to cause a denial of service via crafted PCX/TGA/BMP files to allegro_image addon.",
    "evidence": "osv:CVE-2021-36489",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-36489",
      "aliases": [
        "CVE-2021-36489"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/liballeg/allegro5",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "5e0db6b985eb2714fd276d8808b45f31ea6f52d9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:liballeg:allegro:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "5.2.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.2.6.0",
            "5.1.11",
            "5.1.10",
            "5.1.9",
            "5.1.8",
            "5.1.7",
            "5.1.6",
            "5.1.5",
            "5.1.4",
            "5.1.3",
            "new_api_branch_point@4418",
            "v4-1-15@4357",
            "v4-1-14@4150",
            "v4-1-13@4091",
            "v4-1-12@3911",
            "allegro_console_branch_point@3789",
            "v4-1-10@3560",
            "v4-1-11@3621",
            "v4-0-3@1892",
            "v4-0-2@1892",
            "v4-0-1@1892",
            "allegro_4_0_branch_point@1892",
            "v4-1-9@2943",
            "v4-1-8@2768",
            "v4-1-7@2742",
            "v4-1-6@2723",
            "v4-1-5@2695",
            "v4-1-4@2620",
            "v4-1-3@2511",
            "v4-1-2@2458",
            "v4-1-1@2341",
            "v4-1-0@2243",
            "allegro_5_fork_point@1845",
            "v4-0-0@1758",
            "v3-9-40@1561",
            "v3-9-39@1366",
            "v3-9-38@1107",
            "v3-9-37@764",
            "v3-9-36@566",
            "v3-9-35@443",
            "v3-9-34@322"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-36489.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:49.023752863Z",
      "provider": "osv",
      "references": [
        "https://github.com/liballeg/allegro5/issues/1251"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-36489",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386188,
  "published_at": "2023-02-03T18:15:10.14+00:00"
}