140 lines
6.0 KiB
JSON
140 lines
6.0 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-2026-84992",
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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": "2026-09-02T18:12:13.534Z",
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"datePublished": "2026-09-18T17:10:08.497Z",
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"dateUpdated": "2026-09-18T18:06:19.593Z"
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},
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"containers": {
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"cna": {
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"title": "md-editor-v3: XSS via fenced-code language rendering bypass",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-79",
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"lang": "en",
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
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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": "NONE",
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"baseScore": 6.1,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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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/imzbf/md-editor-v3/security/advisories/GHSA-3rm2-h79c-8qw6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/imzbf/md-editor-v3/security/advisories/GHSA-3rm2-h79c-8qw6"
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},
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{
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"name": "https://github.com/imzbf/md-editor-v3/commit/2c07360420e74087f5bc63032ab155d93e0a0b10",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/imzbf/md-editor-v3/commit/2c07360420e74087f5bc63032ab155d93e0a0b10"
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},
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{
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"name": "https://github.com/imzbf/md-editor-v3/releases/tag/v6.5.4",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/imzbf/md-editor-v3/releases/tag/v6.5.4"
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}
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],
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"affected": [
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{
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"vendor": "imzbf",
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"product": "md-editor-v3",
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"versions": [
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{
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"version": "< 6.5.4",
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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": "2026-09-18T17:10:08.497Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "md-editor-v3 is a Markdown editor for Vue 3 developed in JSX and TypeScript. Prior to 6.5.4, MdPreview's useMarkdownIt() highlight callback in packages/MdEditor/layouts/Content/composition/useMarkdownIt.ts inserts a fenced-code language value into class and language HTML attributes without escaping or consistently quoting it. Both highlighted and non-highlighted rendering paths reach this return value, while XSSPlugin filters only existing html_block and html_inline tokens before rendering and therefore cannot inspect the renderer-generated HTML. An attacker who can supply Markdown can use crafted fenced-code metadata to execute JavaScript in the application origin when a victim renders it, including as stored cross-site scripting when the host persists the Markdown. This issue is fixed in version 6.5.4"
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}
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],
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"source": {
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"advisory": "GHSA-3rm2-h79c-8qw6",
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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/imzbf/md-editor-v3/security/advisories/GHSA-3rm2-h79c-8qw6",
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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": "2026-09-18T18:06:01.191667Z",
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"id": "CVE-2026-84992",
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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": "2026-09-18T18:06:19.593Z"
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}
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}
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]
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}
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} |