Medium
Security advisory
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-59999
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:25 UTC · Revision 1
Source evidence
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
osv:CVE-2026-59999
Complete source record
{
"id": "de290335055769f598701a8ce72952d93a1aba518412e841dc6341f891b28152",
"url": "https://osv.dev/vulnerability/CVE-2026-59999",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-59999",
"summary": "In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.",
"evidence": "osv:CVE-2026-59999",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-59999",
"aliases": [
"CVE-2026-59999"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openssh/openssh-portable",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "e8dd756725e8800fcd0b3fd71ee6b4382d1e8fab"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "10.4"
}
],
"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-2026-59999.json"
}
}
],
"modified": "2026-10-28T02:30:22.124573337Z",
"provider": "osv",
"references": [
"https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2",
"https://www.openssh.org/releasenotes.html#10.4p1",
"https://www.openwall.com/lists/oss-security/2026/07/06/5",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59999.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-59999"
],
"provider_metadata": {
"cwe_ids": [
"CWE-348"
],
"cna_assigner": "mitre",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "10.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59999.json"
}
},
"related_cves": [
{
"value": "CVE-2026-59999",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 488371,
"published_at": "2026-07-08T00:13:08.397+00:00"
}