150 lines
6.6 KiB
JSON
150 lines
6.6 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-2026-55637",
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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": "2026-06-16T23:52:12.057Z",
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"datePublished": "2026-08-25T18:03:34.701Z",
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"dateUpdated": "2026-08-25T18:24:42.746Z"
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},
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"containers": {
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"cna": {
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"title": "genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-346",
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"lang": "en",
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"description": "CWE-346: Origin Validation Error",
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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": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/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/GeiserX/genieacs-mcp/security/advisories/GHSA-cmwv-wf9p-p8wx",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/GeiserX/genieacs-mcp/security/advisories/GHSA-cmwv-wf9p-p8wx"
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},
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{
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"name": "https://github.com/GeiserX/genieacs-mcp/pull/26",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/GeiserX/genieacs-mcp/pull/26"
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},
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{
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"name": "https://github.com/GeiserX/genieacs-mcp/commit/577306d78190622eee97e362b042a69499ef373f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/GeiserX/genieacs-mcp/commit/577306d78190622eee97e362b042a69499ef373f"
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},
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{
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"name": "https://github.com/GeiserX/genieacs-mcp/releases/tag/v0.3.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/GeiserX/genieacs-mcp/releases/tag/v0.3.2"
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}
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],
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"affected": [
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{
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"vendor": "GeiserX",
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"product": "genieacs-mcp",
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"versions": [
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{
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"version": "< 0.3.2",
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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": "2026-08-25T18:03:34.701Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2, the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default MCP_LISTEN_ADDR value 127.0.0.1:8080 when MCP_AUTH_TOKEN is unset and the httpSrv.Start(addr) branch does not validate the Host or Origin headers. A malicious website can use DNS rebinding to send browser requests with attacker-controlled Host and Origin values to the loopback listener, initialize an MCP session, list tools, and invoke operations against the GenieACS NBI configured by ACS_URL. Successful exploitation can expose or modify CPE management state, including device reboots, firmware tasks, TR-069 parameter changes, presets, provisions, tags, connection requests, and task operations. The npm wrapper is not affected because it forces TRANSPORT=stdio and does not expose an HTTP listener. This issue is fixed in version 0.3.2."
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}
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],
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"source": {
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"advisory": "GHSA-cmwv-wf9p-p8wx",
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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/GeiserX/genieacs-mcp/security/advisories/GHSA-cmwv-wf9p-p8wx",
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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": "2026-08-25T18:24:35.743227Z",
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"id": "CVE-2026-55637",
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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": "2026-08-25T18:24:42.746Z"
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}
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}
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]
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}
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} |