178 lines
7.5 KiB
JSON
178 lines
7.5 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-2026-75916",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-08-18T15:05:54.226Z",
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"datePublished": "2026-08-19T14:01:50.370Z",
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"dateUpdated": "2026-10-08T15:51:43.765Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-10-08T15:51:43.765Z"
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},
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"datePublic": "2026-08-05T00:00:00.000Z",
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"title": "SiYuan XSS-to-RCE via unescaped block metadata in hint popup",
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"descriptions": [
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{
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"lang": "en",
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"value": "SiYuan through 3.7.3 contains a cross-site scripting vulnerability in the '((' block-reference autocomplete hint popup. In genHintItemHTML() (app/src/protyle/hint/extend.ts), a candidate block's name, alias, and memo fields are concatenated into the popup's HTML without escaping. An attacker who can set these metadata fields on a block can inject a self-firing payload (e.g. <img src=x onerror=...>) that executes automatically when a victim types '((' followed by a search term that surfaces the crafted block. Because SiYuan's Electron windows run with nodeIntegration enabled, contextIsolation disabled, and no CSP, the injected script gains require('child_process') access, allowing the XSS to escalate to arbitrary OS command execution."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
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"cweId": "CWE-79",
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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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"affected": [
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{
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"vendor": "siyuan-note",
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"product": "siyuan",
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"defaultStatus": "affected",
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"packageURL": "pkg:golang/github.com/siyuan-note/siyuan/kernel"
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:b3log:siyuan:-:*:*:*:*:*:*:*"
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}
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]
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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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"format": "CVSS",
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"cvssV4_0": {
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"version": "4.0",
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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:H/SI:H/SA:H",
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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": "HIGH",
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"subIntegrityImpact": "HIGH",
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"subAvailabilityImpact": "HIGH",
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"baseScore": 9.3,
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"baseSeverity": "CRITICAL"
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}
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},
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "CHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseScore": 8.6,
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"baseSeverity": "HIGH"
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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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"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-5prr-vgxq-69g9",
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"tags": [
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"vendor-advisory"
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],
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"name": "GitHub Security Advisory (GHSA-5prr-vgxq-69g9)"
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},
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{
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"name": "VulnCheck Advisory: SiYuan XSS-to-RCE via unescaped block metadata in hint popup",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/siyuan-xss-to-rce-via-unescaped-block-metadata-in-hint-popup"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "alham-rizvi",
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"type": "reporter"
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},
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{
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"lang": "en",
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"value": "hey-raghav",
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"type": "analyst"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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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/siyuan-note/siyuan/security/advisories/GHSA-5prr-vgxq-69g9",
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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": "2026-08-21T19:21:47.693296Z",
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"id": "CVE-2026-75916",
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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": "2026-08-21T19:22:16.263Z"
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}
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}
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]
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}
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} |