150 lines
6.4 KiB
JSON
150 lines
6.4 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-79749",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-08-25T14:08:18.109Z",
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"datePublished": "2026-08-31T17:54:45.423Z",
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"dateUpdated": "2026-08-31T18:48:57.445Z"
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},
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"containers": {
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"cna": {
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"title": "MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-918",
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"lang": "en",
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"description": "CWE-918: Server-Side Request Forgery (SSRF)",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 7.6,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/samanhappy/mcphub/security/advisories/GHSA-pr4x-3pc7-2fhw",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/samanhappy/mcphub/security/advisories/GHSA-pr4x-3pc7-2fhw"
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},
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{
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"name": "https://github.com/samanhappy/mcphub/pull/1069",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/samanhappy/mcphub/pull/1069"
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},
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{
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"name": "https://github.com/samanhappy/mcphub/commit/2b10ae36112ce68deebf910b22505d44efcef552",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/samanhappy/mcphub/commit/2b10ae36112ce68deebf910b22505d44efcef552"
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},
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{
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"name": "https://github.com/samanhappy/mcphub/releases/tag/v1.0.32",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/samanhappy/mcphub/releases/tag/v1.0.32"
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}
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],
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"affected": [
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{
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"vendor": "samanhappy",
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"product": "mcphub",
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"versions": [
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{
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"version": "< 1.0.32",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-08-31T17:54:45.423Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback, link-local, unique-local, IPv4-mapped, and IPv4-compatible IPv6 addresses. IPv6 transition address families -- NAT64 (64:ff9b::/96), 6to4 (2002::/16), and Teredo (2001::/32) -- are not checked. An attacker who can specify a URL for an MCP server connection can encode a private IPv4 address inside one of these IPv6 forms to bypass the SSRF guard and reach internal infrastructure. This issue has been patched in version 1.0.32."
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}
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],
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"source": {
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"advisory": "GHSA-pr4x-3pc7-2fhw",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/samanhappy/mcphub/security/advisories/GHSA-pr4x-3pc7-2fhw",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-31T18:48:33.754446Z",
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"id": "CVE-2026-79749",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-31T18:48:57.445Z"
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}
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}
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]
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}
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} |