{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0273",
  "published": "2026-07-20T19:06:32Z",
  "modified": "2026-07-20T17:48:27Z",
  "summary": "Updated libssh2 packages fix security vulnerabilities",
  "details": "The updated packages fix security vulnerabilities:\nHeap Buffer Over-read via sftp_symlink() in sftp.c. (CVE-2025-15661)\nlibssh2 userauth.c userauth_password integer overflow. (CVE-2026-7598)\nPre-Authentication DoS via SSH_MSG_EXT_INFO Handler. (CVE-2026-55199)\nOut-of-Bounds Write via Unchecked packet_length in transport.c.\n(CVE-2026-55200)\nInteger Overflow in publickey Subsystem Attribute Allocation.\n(CVE-2026-58050)\nFree of Uninitialized Pointer in publickey List Cleanup.\n(CVE-2026-58051)\n",
  "upstream": [
    "CVE-2025-15661",
    "CVE-2026-7598",
    "CVE-2026-55199",
    "CVE-2026-55200",
    "CVE-2026-58050",
    "CVE-2026-58051"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0273.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=35616"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRU63FODXZBBO73NFWUI32A2A36ETDQZ/"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/06/23/10"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/06/23/11"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-security-announce/2026/msg00276.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZREI4LITT4U2ZXPEEVVNALFKPLXGLAFM/"
    },
    {
      "type": "WEB",
      "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/SRBHQ76PA4ZHTWY5F4ESYPYF3G2NLGWI/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8486-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8532-1"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "libssh2",
        "purl": "pkg:rpm/mageia/libssh2?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.1-2.1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "libssh2",
        "purl": "pkg:rpm/mageia/libssh2?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.0-1.1.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}