147 lines
6.1 KiB
JSON
147 lines
6.1 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-2026-47427",
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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": "2026-05-19T19:37:43.527Z",
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"datePublished": "2026-07-28T15:32:27.294Z",
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"dateUpdated": "2026-07-28T17:31:19.108Z"
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},
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"containers": {
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"cna": {
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"title": "GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-476",
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"lang": "en",
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"description": "CWE-476: NULL Pointer Dereference",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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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/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7"
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},
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{
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"name": "https://github.com/github/github-mcp-server/pull/2502",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/github/github-mcp-server/pull/2502"
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},
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{
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"name": "https://github.com/github/github-mcp-server/commit/c88d2ecdd3bb07f7bdd75296e3ee676febf14f58",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/github/github-mcp-server/commit/c88d2ecdd3bb07f7bdd75296e3ee676febf14f58"
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},
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{
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"name": "https://github.com/github/github-mcp-server/releases/tag/v1.1.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/github/github-mcp-server/releases/tag/v1.1.0"
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}
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],
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"affected": [
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{
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"vendor": "github",
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"product": "github-mcp-server",
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"versions": [
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{
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"version": "< 1.1.0",
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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": "2026-07-28T15:32:27.294Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0."
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}
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],
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"source": {
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"advisory": "GHSA-w4q6-qw23-4rg7",
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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/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7",
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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": "2026-07-28T17:31:12.371732Z",
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"id": "CVE-2026-47427",
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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": "yes"
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},
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{
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"Technical Impact": "partial"
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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": "2026-07-28T17:31:19.108Z"
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}
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}
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]
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}
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} |