CVE-2026-44937
Full vulnerability record from the local CVENow database.
Description
Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.
Severity
HIGH
CVSS score
8.3
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-06 11:16:27.727000
Last modified
2026-10-25 15:10:00.147000
View original CVE JSON
{
"id": "CVE-2026-44937",
"sourceIdentifier": "[email protected]",
"published": "2026-07-06T11:16:27.727",
"lastModified": "2026-10-25T15:10:00.147",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system."
},
{
"lang": "es",
"value": "La posible falsificación de solicitudes de webhook al usar un webhook no autenticado en SUSE Rancher Fleet 0.15 anterior a 0.15.2, 0.14 anterior a 0.14.6, 0.13 anterior a 0.13.11 y 0.12 anterior a 0.12.5 podría ser utilizada por atacantes remotos para causar una denegación de servicio o un ataque de degradación en otros repositorios del sistema."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "SUSE",
"product": "Rancher",
"defaultStatus": "unaffected",
"packageName": "Fleet",
"repo": "https://github.com/rancher/fleet/",
"versions": [
{
"version": "0.15.0",
"lessThan": "0.15.2",
"versionType": "semver",
"status": "affected"
},
{
"version": "0.14.0",
"lessThan": "0.14.6",
"versionType": "semver",
"status": "affected"
},
{
"version": "0.13.0",
"lessThan": "0.13.11",
"versionType": "semver",
"status": "affected"
},
{
"version": "0.12.0",
"lessThan": "0.12.15",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 8.3,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 4.2
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-07-06T12:46:52.400471Z",
"id": "CVE-2026-44937",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-918"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*",
"versionStartIncluding": "0.12.0",
"versionEndExcluding": "0.12.15",
"matchCriteriaId": "8DE7373C-74E0-4B59-AF44-ECB9AC0130B9"
},
{
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},
{
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"versionStartIncluding": "0.14.0",
"versionEndExcluding": "0.14.6",
"matchCriteriaId": "F267A8DC-9A24-4A98-B765-CEEC0EBC2576"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*",
"versionStartIncluding": "0.15.0",
"versionEndExcluding": "0.15.2",
"matchCriteriaId": "BE1A7C49-CBBF-45BA-91F1-D2DA940BE908"
}
]
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}
],
"references": [
{
"url": "https://github.com/rancher/fleet/security/advisories/GHSA-jmf4-m7j9-g72r",
"source": "[email protected]",
"tags": [
"Mitigation",
"Vendor Advisory"
]
}
]
}