Critical
SAML Authentication Replay in Rancher
Type: advisorySources: OSV
A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-44946
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 19:10 UTC · Revision 1
Source evidence
A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,
osv:CVE-2026-44946
Complete source record
{
"id": "06e72226683174fbfe647e827f18b6fbde7abcc7caa5a1117d1da238f5541c91",
"url": "https://osv.dev/vulnerability/CVE-2026-44946",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "SAML Authentication Replay in Rancher",
"summary": "A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,",
"evidence": "osv:CVE-2026-44946",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-44946",
"aliases": [
"CVE-2026-44946",
"GHSA-c5jm-xcmq-9j95"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/rancher/rancher",
"type": "GIT",
"events": [
{
"introduced": "4b8ab8c48d681f77065bf25e1fa502c652b94465"
},
{
"fixed": "9127393c926e2e49c549f3ad6179360779d456ad"
},
{
"introduced": "8815e66bf2e4b528493cf11222f1a63f86305a9f"
},
{
"fixed": "e2755334ece402f2f453f2f113e57785a8b9b42a"
},
{
"introduced": "f94ac947f75e312f1ab9217d21b2770b48b734c8"
},
{
"fixed": "81dc2c4ed99c5d478f01ab1a6d4def772df349c6"
},
{
"introduced": "19d8a9c03fde57ab691101dc90a17b92c55f09ad"
},
{
"fixed": "4603afd276483411c06a2b716eca38931b564e48"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.11.0"
},
{
"fixed": "2.11.15"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.12.0"
},
{
"fixed": "2.12.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.13.0"
},
{
"fixed": "2.13.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.14.0"
},
{
"fixed": "2.14.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.13.3",
"v2.12.11-rc1",
"v2.14.3-rc1",
"v2.11.15-rc1",
"v2.11.15-alpha4",
"v2.13.7-rc1",
"v2.12.11-alpha5",
"v2.14.2",
"v2.14.3-alpha6",
"v2.13.7-alpha7",
"v2.11.15-alpha3",
"v2.12.11-alpha4",
"v2.13.7-alpha6",
"v2.11.15-alpha2",
"v2.13.7-alpha5",
"v2.12.11-alpha3",
"v2.14.3-alpha5",
"v2.13.7-alpha4",
"v2.14.3-alpha4",
"v2.11.15-alpha1",
"v2.12.11-alpha2",
"v2.12.11-alpha1",
"v2.14.3-alpha3",
"v2.13.7-alpha3",
"v2.14.3-alpha2",
"v2.13.7-alpha2",
"v2.13.7-alpha1",
"v2.14.3-alpha1",
"v2.11.14",
"v2.12.10",
"v2.13.6",
"v2.14.2-rc1",
"v2.12.10-rc1",
"v2.11.14-rc1",
"v2.13.6-rc1",
"v2.14.2-alpha8",
"v2.13.6-alpha6",
"v2.14.2-alpha7",
"v2.11.14-alpha1",
"v2.14.2-alpha6",
"v2.12.10-alpha5",
"v2.12.10-alpha4",
"v2.13.6-alpha5",
"v2.14.2-alpha5",
"v2.14.2-alpha4",
"v2.14.1-alpha14",
"v2.12.10-alpha3",
"v2.13.6-alpha4",
"v2.14.2-alpha3",
"v2.13.6-alpha3",
"v2.13.6-alpha2",
"v2.12.10-alpha2",
"v2.14.2-alpha2",
"v2.12.10-alpha1",
"v2.13.6-alpha1",
"v2.14.2-alpha1",
"v2.14.1",
"v2.11.13",
"v2.13.5",
"v2.12.9",
"v2.14.1-rc2",
"v2.14.1-rc1",
"v2.13.5-rc1",
"v2.12.9-rc1",
"v2.14.1-alpha13",
"v2.14.1-alpha12",
"v2.11.13-rc1",
"v2.11.13-alpha6",
"v2.12.9-alpha7",
"v2.13.5-alpha7",
"v2.14.1-alpha11",
"v2.14.1-alpha10",
"v2.14.1-alpha9",
"v2.14.1-alpha8",
"v2.11.13-alpha5",
"v2.13.5-alpha6",
"v2.12.9-alpha6",
"v2.14.1-alpha7",
"v2.14.1-alpha6",
"v2.14.1-alpha5",
"v2.13.5-alpha5",
"v2.12.9-alpha5",
"v2.11.13-alpha4",
"v2.11.13-alpha3",
"v2.11.13-alpha2",
"v2.12.9-alpha4",
"v2.13.5-alpha4",
"v2.14.1-alpha4",
"v2.12.9-alpha3",
"v2.13.5-alpha3",
"v2.14.1-alpha3",
"v2.11.13-alpha1",
"v2.13.5-alpha2",
"v2.12.9-alpha2",
"v2.12.9-alpha1",
"v2.13.5-alpha1",
"v2.14.1-alpha2",
"v2.14.1-alpha1",
"v2.11.12",
"v2.12.8",
"v2.14.0",
"v2.13.4",
"v2.11.12-rc1",
"v2.13.4-rc1",
"v2.12.8-rc1",
"v2.13.4-alpha5",
"v2.13.4-alpha4",
"v2.13.4-alpha3",
"v2.13.4-alpha2",
"v2.12.8-alpha2",
"v2.11.12-alpha1",
"v2.13.4-alpha1",
"v2.12.8-alpha1",
"v2.12.7",
"v2.11.11",
"v2.12.7-rc1",
"v2.11.11-rc1",
"v2.13.3-rc3",
"v2.13.3-rc2",
"v2.13.3-rc1",
"v2.13.3-alpha6",
"v2.13.3-alpha5",
"v2.12.7-alpha3",
"v2.11.11-alpha2",
"v2.12.7-alpha2",
"v2.13.3-alpha4",
"v2.13.3-alpha3",
"v2.13.3-alpha2",
"v2.11.11-alpha1",
"v2.13.3-alpha1",
"v2.12.7-alpha1",
"v2.11.10-rc2",
"v2.11.10",
"v2.13.2-rc2",
"v2.13.2",
"v2.12.6-rc2",
"v2.12.6",
"v2.11.10-rc1",
"v2.12.6-rc1",
"v2.13.2-rc1",
"v2.13.2-alpha7",
"v2.13.2-alpha6",
"v2.12.6-alpha2",
"v2.13.2-alpha5",
"v2.11.10-alpha1",
"v2.12.5",
"v2.12.6-alpha1",
"v2.11.9-alpha2",
"v2.13.2-alpha4",
"v2.13.2-alpha3",
"v2.13.2-alpha2",
"v2.13.2-alpha1",
"v2.12.4-hotfix-a3c0.1",
"v2.12.4",
"v2.11.9",
"v2.13.1",
"v2.12.5-rc1",
"v2.11.9-rc1",
"v2.13.1-rc1",
"v2.13.1-alpha7",
"v2.13.1-alpha6",
"v2.13.1-alpha5",
"v2.13.1-alpha4",
"v2.11.9-alpha1",
"v2.13.1-alpha3",
"v2.13.1-alpha2",
"v2.12.5-alpha2",
"v2.13.1-alpha1",
"v2.12.5-alpha1",
"v2.11.8",
"v2.13.0-rc4",
"v2.13.0",
"v2.12.4-rc1",
"v2.11.8-rc1",
"v2.11.8-alpha5",
"v2.11.8-alpha4",
"v2.12.4-alpha6",
"v2.11.8-alpha3",
"v2.12.4-alpha5",
"v2.11.8-alpha2",
"v2.12.4-alpha4",
"v2.12.4-alpha3",
"v2.11.8-alpha1",
"v2.12.4-alpha2",
"v2.12.4-alpha1",
"v2.12.3",
"v2.11.7",
"v2.11.7-rc2",
"v2.11.7-rc1",
"v2.12.3-rc1",
"v2.11.7-alpha2",
"v2.12.3-alpha2",
"v2.11.7-alpha1",
"v2.11.6",
"v2.12.2",
"v2.12.3-alpha1",
"v2.11.1",
"v2.11.6-rc1",
"v2.12.2-rc2",
"v2.12.2-rc1",
"v2.11.6-alpha4",
"v2.12.2-alpha5",
"v2.12.2-alpha4",
"v2.12.2-alpha3",
"v2.11.6-alpha3",
"v2.12.2-alpha2",
"v2.11.6-alpha2",
"v2.11.6-alpha1",
"v2.12.2-alpha1",
"v2.12.1",
"v2.11.5",
"v2.12.1-rc1",
"v2.11.5-rc1",
"v2.11.5-alpha3",
"v2.12.1-alpha4",
"v2.11.5-alpha2",
"v2.12.1-alpha3",
"v2.12.1-alpha2",
"v2.12.1-alpha1",
"v2.11.5-alpha1",
"v2.11.4",
"v2.11.3",
"v2.12.0",
"v2.11.4-rc1",
"v2.11.4-alpha5",
"v2.11.4-alpha4",
"v2.11.4-alpha3",
"v2.11.4-alpha2",
"v2.11.4-alpha1",
"v2.11.3-rc1",
"v2.11.3-alpha3",
"v2.11.3-alpha2",
"v2.11.3-alpha1",
"v2.11.2",
"v2.11.2-rc2",
"v2.11.2-rc1",
"v2.11.2-alpha4",
"v2.11.2-alpha3",
"v2.11.2-alpha2",
"v2.11.2-alpha1",
"v2.11.1-rc2",
"v2.11.1-rc1",
"v2.11.1-alpha3",
"v2.11.1-alpha2",
"v2.11.1-alpha1",
"v2.11.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44946.json"
}
}
],
"modified": "2026-10-28T02:30:38.684698447Z",
"provider": "osv",
"references": [
"https://github.com/rancher/rancher/",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44946.json",
"https://github.com/rancher/rancher/security/advisories/GHSA-c5jm-xcmq-9j95",
"https://nvd.nist.gov/vuln/detail/CVE-2026-44946"
],
"provider_metadata": {
"cwe_ids": [
"CWE-294"
],
"cna_assigner": "suse",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44946.json"
}
},
"related_cves": [
{
"value": "CVE-2026-44946",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 506017,
"published_at": "2026-06-30T12:14:54.269+00:00"
}