{
  "published": "2026-06-27T13:54:18Z",
  "modified": "2026-06-29T08:44:22Z",
  "schema_version": "1.7.5",
  "id": "CGA-3488-67xv-ppjc",
  "severity": [
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
    }
  ],
  "upstream": [
    "CVE-2026-55200",
    "GHSA-r8mh-x5qv-7gg2"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55200.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55200"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libssh2/libssh2/pull/2052"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libssh2/libssh2"
    },
    {
      "type": "EVIDENCE",
      "url": "https://web.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-poc"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Chainguard",
        "name": "libssh2",
        "purl": "pkg:apk/chainguard/libssh2?arch=aarch64"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.1-r6"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "components": [
          {
            "component_name": "libssh2",
            "component_version": "1.11.1-r6",
            "component_type": "apk",
            "component_location": "/.PKGINFO",
            "component_purl": "pkg:apk/libssh2@1.11.1-r6",
            "latest_event_status": "fixed",
            "latest_event_timestamp": "2026-06-29T08:39:43Z"
          }
        ]
      }
    },
    {
      "package": {
        "ecosystem": "Wolfi",
        "name": "libssh2",
        "purl": "pkg:apk/wolfi/libssh2?arch=aarch64"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.1-r6"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "components": [
          {
            "component_name": "libssh2",
            "component_version": "1.11.1-r6",
            "component_type": "apk",
            "component_location": "/.PKGINFO",
            "component_purl": "pkg:apk/libssh2@1.11.1-r6",
            "latest_event_status": "fixed",
            "latest_event_timestamp": "2026-06-29T08:39:43Z"
          }
        ]
      }
    }
  ]
}