Updated openssh packages fix security vulnerabilities

{
  "id": "26ac2042c113caccb505ae6ac8808d507594ca5b163a44f03ff1f8fdbdfefa2a",
  "url": "https://osv.dev/vulnerability/MGASA-2026-0521",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Updated openssh packages fix security vulnerabilities",
    "summary": "Local mitm of x11 forwarding via abstract unix socket pre-binding in Red Hat Enterprise Linux openssh client versions. (CVE-2026-55655) sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when \"sftp server:/path .\" is used with an attacker-controlled server. (CVE-2026-59995) scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations. (CVE-2026-59996) internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection. (CVE-2026-59997) sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory. (CVE-2026-59998) In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not. (CVE-2026-59999) sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication. (CVE-2026-60000) sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay. (CVE-2026-60001) ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome o",
    "evidence": "osv:MGASA-2026-0521",
    "products": [
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "10.0p1-4.1.mga10",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MGASA-2026-0521",
      "aliases": [
        "MGASA-2026-0521"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "10.0p1-4.1.mga10"
                }
              ]
            }
          ],
          "package": {
            "name": "openssh",
            "purl": "pkg:rpm/mageia/openssh?arch=source&distro=mageia-10",
            "ecosystem": "Mageia:10"
          },
          "database_specific": {
            "source": "https://advisories.mageia.org/MGASA-2026-0521.json"
          },
          "ecosystem_specific": {
            "section": "core"
          }
        }
      ],
      "modified": "2026-10-19T17:13:38.453313742Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-106552",
        "CVE-2026-106553",
        "CVE-2026-106555",
        "CVE-2026-106582",
        "CVE-2026-106583",
        "CVE-2026-106584",
        "CVE-2026-106585",
        "CVE-2026-106586",
        "CVE-2026-106587",
        "CVE-2026-55655",
        "CVE-2026-59995",
        "CVE-2026-59996",
        "CVE-2026-59997",
        "CVE-2026-59998",
        "CVE-2026-59999",
        "CVE-2026-60000",
        "CVE-2026-60001",
        "CVE-2026-60002",
        "CVE-2026-73281",
        "CVE-2026-73282",
        "CVE-2026-73283"
      ],
      "references": [
        "https://advisories.mageia.org/MGASA-2026-0521.html",
        "https://bugs.mageia.org/show_bug.cgi?id=35876",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5FAMKD5T6664L7TA7EBJFLZB2RX3AQYZ/",
        "https://ubuntu.com/security/notices/USN-8533-1",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I2ZK2T3OFPOIBFAZQAJISQ7EML4PHYVB/",
        "https://www.openwall.com/lists/oss-security/2026/08/12/1",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YRB2YTKIEJGFGAKEXYAPCDQSKUFBEI7B/",
        "https://ubuntu.com/security/notices/USN-8721-1",
        "https://ubuntu.com/security/notices/USN-8928-1"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-106552",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106553",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106555",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106582",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106583",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106584",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106585",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106586",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-106587",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-55655",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59995",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59996",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59997",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59998",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-59999",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-60000",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-60001",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-60002",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-73281",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-73282",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-73283",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 375518,
  "published_at": "2026-10-19T16:59:00+00:00"
}