171 lines
7.7 KiB
JSON
171 lines
7.7 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-2026-54566",
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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": "2026-06-15T19:15:27.342Z",
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"datePublished": "2026-10-14T19:08:43.663Z",
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"dateUpdated": "2026-10-14T19:45:22.736Z"
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},
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"containers": {
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"cna": {
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"title": "Markdown Preview Enhanced: Remote Code Execution via VM Sandbox Escape in `.crossnote/config.js` and `.crossnote/parser.js`",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-94",
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"lang": "en",
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"description": "CWE-94: Improper Control of Generation of Code ('Code Injection')",
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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": "LOCAL",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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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": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.5,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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/shd101wyy/vscode-markdown-preview-enhanced/security/advisories/GHSA-427h-jhpr-8jch",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/security/advisories/GHSA-427h-jhpr-8jch"
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},
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{
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"name": "https://github.com/shd101wyy/crossnote/pull/443",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/crossnote/pull/443"
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},
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{
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"name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/pull/2320",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/pull/2320"
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},
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{
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"name": "https://github.com/shd101wyy/crossnote/commit/e4890d64502e53b717cce0cb73f1a78b244dc640",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/crossnote/commit/e4890d64502e53b717cce0cb73f1a78b244dc640"
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},
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{
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"name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/0d4010988c6ae56a38c6dec4a7509cbd5a7dcb4c",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/0d4010988c6ae56a38c6dec4a7509cbd5a7dcb4c"
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},
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{
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"name": "https://github.com/shd101wyy/crossnote/releases/tag/0.9.30",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/crossnote/releases/tag/0.9.30"
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},
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{
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"name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/releases/tag/0.8.29",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/releases/tag/0.8.29"
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}
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],
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"affected": [
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{
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"vendor": "shd101wyy",
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"product": "vscode-markdown-preview-enhanced",
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"versions": [
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{
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"version": "< 0.8.29",
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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": "2026-10-14T19:08:43.663Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.29, Markdown Preview Enhanced evaluates repository-controlled .crossnote/config.js and .crossnote/parser.js files with vm.runInNewContext, which does not provide a security boundary from the Node.js host realm. Opening a Markdown file in a malicious repository automatically loads these files, and prototype-chain traversal can reach the host Function constructor and process object, allowing operating-system commands to execute as the victim account without further interaction. Both configuration evaluation and parser-hook evaluation are affected, and the attack does not depend on module-scoped require being available. This issue is fixed in version 0.8.29."
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}
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],
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"source": {
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"advisory": "GHSA-427h-jhpr-8jch",
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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/shd101wyy/vscode-markdown-preview-enhanced/security/advisories/GHSA-427h-jhpr-8jch",
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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": "2026-10-14T19:44:50.050593Z",
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"id": "CVE-2026-54566",
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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": "2026-10-14T19:45:22.736Z"
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}
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}
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]
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}
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} |