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Security advisory

Type: advisorySources: OSVCVE: CVE-2026-73281

In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-73281
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 08:42 UTC · Revision 1

Source evidence

CVE-2026-73281

core-osv · Original source

Published 11 Aug 2026, 19:10 UTC

In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.

osv:CVE-2026-73281
Complete source record
{
  "id": "41e8e7130f54be8baeeb322fa8c2b5f9bd5e2ff2861c6bd47311de90f0ca863f",
  "url": "https://osv.dev/vulnerability/CVE-2026-73281",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-73281",
    "summary": "In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.",
    "evidence": "osv:CVE-2026-73281",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-73281",
      "aliases": [
        "CVE-2026-73281"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openssh/openssh-portable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b3f7344209832eea8ece447d871ea748767c444b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "10.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "V_9_5_P1",
            "V_9_2_P1",
            "V_9_7_P1",
            "V_9_6_P1",
            "V_9_3_P1",
            "V_9_1_P1",
            "V_9_0_P1",
            "V_8_9_P1",
            "V_8_8_P1",
            "V_8_7_P1",
            "V_8_6_P1",
            "V_8_5_P1",
            "V_8_4_P1",
            "V_8_2_P1",
            "V_8_1_P1",
            "V_8_0_P1",
            "V_7_9_P1",
            "V_7_8_P1",
            "V_7_7_P1",
            "V_7_6_P1",
            "V_7_5_P1",
            "V_7_4_P1",
            "V_7_3_P1",
            "V_7_2_P1",
            "V_7_1_P1",
            "V_7_0_P1",
            "V_6_9_P1",
            "V_6_8_P1",
            "V_6_6_P1",
            "V_6_5_P1",
            "V_6_2_P1",
            "V_6_1_P1",
            "V_6_0_P1",
            "V_5_7_P1",
            "V_5_5_P1",
            "V_5_2_P1",
            "V_5_1_P1",
            "V_5_0_P1",
            "V_4_2_P1",
            "V_3_9_P1",
            "V_3_8_P1",
            "AFTER_KRB5_GSSAPI_MERGE",
            "BEFORE_KRB5_GSSAPI_MERGE",
            "POST_KRB4_REMOVAL",
            "PRE_KRB4_REMOVAL",
            "AFTER_FREEBSD_PAM_MERGE",
            "BEFORE_FREEBSD_PAM_MERGE",
            "V_3_6_1_P1",
            "V_3_4_P1",
            "V_3_2_2_P1",
            "PRE_SW_KRBV",
            "V_3_1_P1",
            "V_3_0_1_P1",
            "V_3_0_P1",
            "V_2_5_2_P1",
            "V_2_5_1_P2",
            "V_2_5_1_P1",
            "V_2_5_0_P1",
            "PRE-REORDER",
            "V_2_3_0_P1",
            "PRE_CYGWIN_MERGE",
            "V_2_2_0_P1",
            "V_2_1_1_P4",
            "V_2_1_1_P3",
            "ABOUT_TO_ADD_INET_ATON",
            "V_2_1_1_P2",
            "V_2_1_1_P1",
            "PRE_NEW_LOGIN_CODE",
            "V_2_1_0_P3",
            "V_2_1_0_P2",
            "V_2_1_0_P1",
            "V_2_1_0",
            "V_2_0_0_BETA2",
            "V_2_0_0_BETA1",
            "V_2_0_0_TEST1",
            "V_1_2_3_TEST3",
            "V_1_2_3_TEST2",
            "V_1_2_3_TEST1",
            "V_1_2_3",
            "V_1_2_3_PRE5",
            "V_1_2_3_PRE4",
            "V_1_2_3_PRE3",
            "V_1_2_3_PRE2",
            "V_1_2_3_PRE1",
            "V_1_2_2_P1",
            "V_1_2_2",
            "V_1_2_2_PRE29",
            "V_1_2_2_PRE28",
            "V_1_2_1_PRE27",
            "V_1_2_1_PRE26",
            "PRE_IPV6",
            "V_1_2_1_PRE25",
            "V_1_2_1_PRE24",
            "V_1_2_1_PRE23",
            "V_1_2_1_PRE22",
            "PRE_FIXPATHS_INTEGRATION",
            "V_1_2_1_PRE21",
            "V_1_2_1_PRE20",
            "V_1_2_1_PRE19",
            "PRE_HPUX_INTEGRATION",
            "V_1_2_1_PRE18",
            "V_1_2PRE17",
            "V_1_2_PRE16",
            "V_1_2_PRE15",
            "V_1_2_PRE14",
            "V_1_2_PRE13",
            "V_1_2_PRE12",
            "V_1_2_PRE11",
            "V_1_2_PRE10",
            "V_1_2_PRE9",
            "V_1_2_PRE8",
            "V_1_2_PRE7",
            "V_1_2_PRE6",
            "V_1_2_PRE5",
            "V_1_2_PRE4",
            "PRE_DAN_PATCH_MERGE"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73281.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.008390505Z",
      "provider": "osv",
      "references": [
        "https://www.openssh.org/releasenotes.html#10.5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73281.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73281"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-669"
        ],
        "cna_assigner": "mitre",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "10.5"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73281.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73281",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501188,
  "published_at": "2026-08-11T19:10:33.079+00:00"
}