184 lines
8.4 KiB
JSON
184 lines
8.4 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-86351",
|
|
"assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "CIRCL",
|
|
"dateReserved": "2026-09-07T09:59:32.940Z",
|
|
"datePublished": "2026-09-07T09:59:34.850Z",
|
|
"dateUpdated": "2026-09-08T14:49:21.745Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"defaultStatus": "unaffected",
|
|
"product": "MISP",
|
|
"repo": "https://github.com/MISP/MISP",
|
|
"vendor": "MISP",
|
|
"versions": [
|
|
{
|
|
"lessThanOrEqual": "2.5.45",
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"type": "finder",
|
|
"value": "Scottish Government - National Cyber Team"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"type": "remediation developer",
|
|
"value": "iglocska"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"type": "remediation developer",
|
|
"value": "Claude Opus 5 (1M context)"
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"supportingMedia": [
|
|
{
|
|
"base64": false,
|
|
"type": "text/html",
|
|
"value": "<p>Affected versions of MISP validate the user-configurable homepage by checking only whether the supplied path begins with <code>/</code>. That check is insufficient because protocol-relative URLs such as <code>//attacker.example</code> also begin with <code>/</code> but resolve to an external origin in browsers.</p>\n<p>The vulnerable homepage value can be stored as a user setting and later used by the post-login routing logic. The commit explicitly identifies <code>//attacker.example</code> as a payload that passed validation and was emitted to the <code>Location</code> header after login.</p><p>The fix introduces a shared <code>InternalRedirectValidator</code> that rejects URLs containing a host, scheme, userinfo, unsafe leading <code>//</code> or <code>/\\</code>, malformed URLs, and control characters. It also revalidates homepage settings on read so legacy or internally written unsafe values cannot bypass the new storage-time validation.</p>Version affected: ≤2.5.45"
|
|
}
|
|
],
|
|
"value": "Affected versions of MISP validate the user-configurable homepage by checking only whether the supplied path begins with /. That check is insufficient because protocol-relative URLs such as //attacker.example also begin with / but resolve to an external origin in browsers.\n\n\nThe vulnerable homepage value can be stored as a user setting and later used by the post-login routing logic. The commit explicitly identifies //attacker.example as a payload that passed validation and was emitted to the Location header after login.\n\nThe fix introduces a shared InternalRedirectValidator that rejects URLs containing a host, scheme, userinfo, unsafe leading // or /\\, malformed URLs, and control characters. It also revalidates homepage settings on read so legacy or internally written unsafe values cannot bypass the new storage-time validation.\n\nVersion affected: ≤2.5.45"
|
|
}
|
|
],
|
|
"impacts": [
|
|
{
|
|
"capecId": "CAPEC-178",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "CAPEC-178 Cross-Site Flashing"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV4_0": {
|
|
"Automatable": "NOT_DEFINED",
|
|
"Recovery": "NOT_DEFINED",
|
|
"Safety": "NOT_DEFINED",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"attackVector": "NETWORK",
|
|
"baseScore": 5.1,
|
|
"baseSeverity": "MEDIUM",
|
|
"privilegesRequired": "LOW",
|
|
"providerUrgency": "NOT_DEFINED",
|
|
"subAvailabilityImpact": "NONE",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "LOW",
|
|
"userInteraction": "PASSIVE",
|
|
"valueDensity": "NOT_DEFINED",
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
|
|
"version": "4.0",
|
|
"vulnAvailabilityImpact": "NONE",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"vulnerabilityResponseEffort": "NOT_DEFINED"
|
|
},
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-601",
|
|
"description": "CWE-601 URL Redirection to Untrusted Site ('Open Redirect')",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-20",
|
|
"description": "CWE-20 Improper Input Validation",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
|
|
"shortName": "CIRCL",
|
|
"dateUpdated": "2026-09-07T09:59:34.850Z"
|
|
},
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"patch"
|
|
],
|
|
"url": "https://github.com/MISP/MISP/commit/bd454f65a"
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"title": "MISP User Homepage Validation Allows Authenticated Open Redirect via Protocol-Relative URL",
|
|
"x_generator": {
|
|
"engine": "Vulnogram 0.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-09-08T14:49:13.991856Z",
|
|
"id": "CVE-2026-86351",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-09-08T14:49:21.745Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |