Security advisory

{
  "id": "79c0aa420a423149df7a213e4fde0a207471137c47ee9700f5ca7ca32b55f202",
  "url": "https://osv.dev/vulnerability/CVE-2020-5254",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-5254",
    "summary": "In NetHack before 3.6.6, some out-of-bound values for the hilite_status option can be exploited. NetHack 3.6.6 resolves this issue.",
    "evidence": "osv:CVE-2020-5254",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-5254",
      "aliases": [
        "CVE-2020-5254",
        "GHSA-2ch6-6r8h-m2p9"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nethack/nethack",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d4ebae12f1a709d1833cf466dd0c553fb97518d2"
                },
                {
                  "fixed": "34c56eece35f42aa99bb5ab1a829bb31b2db3b1a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nethack:nethack:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.6.1"
                      },
                      {
                        "fixed": "3.6.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "NetHack-3.6.5_Released",
            "NetHack-3.6.5_PostRelease",
            "NetHack-3.6.4_Released",
            "NetHack-3.6.3_Released",
            "NetHack-3.6.3.beta1.2019.11.17",
            "NetHack-3.6.3.wip.2019.10.30",
            "v3.6.3.wip.2019.10.29",
            "NetHack-3.6.3.wip.2019.10.29",
            "v3.6.3.757eca7",
            "NetHack-3.6.3_WIP",
            "NetHack-3.6.2_Released",
            "NetHack-3.6.2_Release",
            "NetHack-3.6.1_Release",
            "NetHack-3.6.1_RC01"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5254.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:22.414046996Z",
      "provider": "osv",
      "references": [
        "https://github.com/NetHack/NetHack/security/advisories/GHSA-2ch6-6r8h-m2p9"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-5254",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385225,
  "published_at": "2020-03-10T17:15:13.08+00:00"
}