126 lines
5.1 KiB
JSON
126 lines
5.1 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-2026-48529",
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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": "2026-05-21T16:18:10.619Z",
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"datePublished": "2026-06-26T16:33:32.688Z",
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"dateUpdated": "2026-06-27T02:43:34.588Z"
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},
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"containers": {
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"cna": {
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"title": "GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-284",
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"lang": "en",
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"description": "CWE-284: Improper Access Control",
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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": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 6,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
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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-pjp5-fpmr-3349",
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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-pjp5-fpmr-3349"
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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": ">= 0.22.0, < 1.1.2",
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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": "2026-06-26T16:33:32.688Z"
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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. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL queries are executed using the first user's credentials. The singleton is never updated to reflect later users' tokens. This vulnerability is fixed in 1.1.2."
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}
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],
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"source": {
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"advisory": "GHSA-pjp5-fpmr-3349",
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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-pjp5-fpmr-3349",
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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": "2026-06-27T02:42:44.775898Z",
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"id": "CVE-2026-48529",
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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": "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": "2026-06-27T02:43:34.588Z"
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}
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}
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]
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}
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} |