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vuln-cve/data/2026/55xxx/CVE-2026-55245.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-55245",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-16T16:44:00.624Z",
"datePublished": "2026-08-28T18:24:16.723Z",
"dateUpdated": "2026-08-28T19:54:10.966Z"
},
"containers": {
"cna": {
"title": "Bifrost: SSRF deny-list incomplete: isPublicIP permits CGNAT, IPv6 6to4/NAT64, and site-local in FetchAndEncodeURL",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-918",
"lang": "en",
"description": "CWE-918: Server-Side Request Forgery (SSRF)",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/maximhq/bifrost/security/advisories/GHSA-w98g-5w9p-p3rc",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/maximhq/bifrost/security/advisories/GHSA-w98g-5w9p-p3rc"
},
{
"name": "https://github.com/maximhq/bifrost/pull/4092",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/maximhq/bifrost/pull/4092"
},
{
"name": "https://github.com/maximhq/bifrost/commit/54ec431fc5255ff42c36420d88549477e0b33d89",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/maximhq/bifrost/commit/54ec431fc5255ff42c36420d88549477e0b33d89"
},
{
"name": "https://github.com/maximhq/bifrost/releases/tag/core/v1.5.17",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/maximhq/bifrost/releases/tag/core/v1.5.17"
}
],
"affected": [
{
"vendor": "maximhq",
"product": "bifrost",
"versions": [
{
"version": "< 1.5.17",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-08-28T18:24:16.723Z"
},
"descriptions": [
{
"lang": "en",
"value": "Bifrost is an enterprise AI gateway for routing requests to model providers. Prior to 1.5.17, the isPublicIP function in core/providers/utils/fetch.go, reached through FetchAndEncodeURL for Bedrock and Vertex image or document URLs, classifies Carrier-Grade NAT 100.64.0.0/10, IPv6 6to4 2002::/16, NAT64 64:ff9b::/96 and 64:ff9b:1::/48, and deprecated IPv6 site-local fec0::/10 addresses as public. A remote attacker who controls a multimodal request URL can make the gateway fetch internal services, including a cloud instance metadata endpoint encoded through 6to4 or NAT64. This issue is fixed in version 1.5.17."
}
],
"source": {
"advisory": "GHSA-w98g-5w9p-p3rc",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/maximhq/bifrost/security/advisories/GHSA-w98g-5w9p-p3rc",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-28T19:54:05.268770Z",
"id": "CVE-2026-55245",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"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": "2026-08-28T19:54:10.966Z"
}
}
]
}
}