CVE-2026-75917

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-19. A secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.6Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file-tree picker's hover-tooltip generation (app/src/util/pathName.ts, getLeaf()/movePathTo()) used by the 'move/link to' path-selection dialogs, where document metadata fields (bookmark, alias, memo, and an alternate name field) are concatenated into the aria-label HTML attribute without escaping. A document crafted with a double quote in any of these fields breaks out of the attribute context and injects arbitrary HTML attributes including inline event handlers (e.g., onmouseover). Because every SiYuan Electron BrowserWindow runs with nodeIntegration:true, contextIsolation:false, and no CSP, the injected handler gains require('child_process') access, escalating the XSS to arbitrary OS command execution when a victim merely hovers over the malicious document entry in the path-picker dialog. Malicious documents reach victims via sharing, sync, or import.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
14th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 26, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Patch available. Sources: github.
generic

SiYuan before v3.7.4 XSS-to-RCE via pathName.ts | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-xss-to-rce-via-pathname-ts
github Patch Available

Attribute-breakout XSS-to-RCE via unescaped document bookmark/alias/memo/name fields in the "move/link to" file-tree picker's tooltip (app/src/util/pathName.ts), triggered by hovering · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jjq3-3942-x99r

Vendor Advisories for CVE-2026-75917(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 105× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 180 total refreshes for this CVE.

  1. 2026-10-05 05:13 UTCEG score recompute
  2. 2026-10-05 05:13 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 15:46 UTCGHSA enrichment
  5. 2026-10-04 04:23 UTCGHSA enrichment
  6. 2026-10-03 16:58 UTCEG score recompute
  7. 2026-10-03 16:58 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-02 21:38 UTCEG score recompute
  10. 2026-10-02 21:38 UTCGHSA enrichment
  11. 2026-10-02 10:12 UTCGHSA enrichment
  12. 2026-10-01 22:48 UTCEG score recompute
  13. 2026-10-01 22:48 UTCGHSA enrichment
  14. 2026-10-01 19:50 UTCEPSS rescore
  15. 2026-10-01 08:02 UTCGHSA enrichment
  16. 2026-09-30 20:36 UTCEG score recompute
  17. 2026-09-30 20:36 UTCGHSA enrichment
  18. 2026-09-30 08:50 UTCEG score recompute
  19. 2026-09-30 08:50 UTCGHSA enrichment
  20. 2026-09-29 15:24 UTCEPSS rescore
  21. 2026-09-28 21:44 UTCEG score recompute
  22. 2026-09-28 21:44 UTCGHSA enrichment
  23. 2026-09-28 13:52 UTCEPSS rescore
  24. 2026-09-28 05:58 UTCGHSA enrichment
  25. 2026-09-27 18:34 UTCEG score recompute
Show 75 more
  1. 2026-09-27 18:34 UTCGHSA enrichment
  2. 2026-09-27 13:48 UTCEPSS rescore
  3. 2026-09-27 07:07 UTCEG score recompute
  4. 2026-09-27 07:07 UTCGHSA enrichment
  5. 2026-09-26 15:59 UTCEPSS rescore
  6. 2026-09-26 00:28 UTCEPSS rescore
  7. 2026-09-25 07:13 UTCGHSA enrichment
  8. 2026-09-24 19:49 UTCEG score recompute
  9. 2026-09-24 19:49 UTCGHSA enrichment
  10. 2026-09-24 14:04 UTCEPSS rescore
  11. 2026-09-24 07:36 UTCGHSA enrichment
  12. 2026-09-23 20:10 UTCEG score recompute
  13. 2026-09-23 20:10 UTCGHSA enrichment
  14. 2026-09-23 17:54 UTCEPSS rescore
  15. 2026-09-23 07:21 UTCGHSA enrichment
  16. 2026-09-22 19:58 UTCEG score recompute
  17. 2026-09-22 19:58 UTCGHSA enrichment
  18. 2026-09-22 16:01 UTCEPSS rescore
  19. 2026-09-22 06:46 UTCEG score recompute
  20. 2026-09-22 06:45 UTCGHSA enrichment
  21. 2026-09-21 21:09 UTCEPSS rescore
  22. 2026-09-21 19:22 UTCGHSA enrichment
  23. 2026-09-21 07:57 UTCGHSA enrichment
  24. 2026-09-20 20:33 UTCEG score recompute
  25. 2026-09-20 20:33 UTCGHSA enrichment
  26. 2026-09-20 20:16 UTCEPSS rescore
  27. 2026-09-20 09:10 UTCGHSA enrichment
  28. 2026-09-19 21:40 UTCEG score recompute
  29. 2026-09-19 21:40 UTCGHSA enrichment
  30. 2026-09-19 10:17 UTCGHSA enrichment
  31. 2026-09-18 21:45 UTCEG score recompute
  32. 2026-09-18 21:45 UTCGHSA enrichment
  33. 2026-09-18 19:28 UTCEPSS rescore
  34. 2026-09-18 08:58 UTCGHSA enrichment
  35. 2026-09-17 21:34 UTCEG score recompute
  36. 2026-09-17 21:34 UTCGHSA enrichment
  37. 2026-09-17 07:34 UTCGHSA enrichment
  38. 2026-09-16 20:08 UTCEG score recompute
  39. 2026-09-16 20:08 UTCGHSA enrichment
  40. 2026-09-16 14:08 UTCEPSS rescore
  41. 2026-09-16 07:19 UTCEG score recompute
  42. 2026-09-16 07:19 UTCGHSA enrichment
  43. 2026-09-16 05:15 UTCEPSS rescore
  44. 2026-09-15 19:55 UTCGHSA enrichment
  45. 2026-09-15 08:11 UTCEG score recompute
  46. 2026-09-15 08:11 UTCGHSA enrichment
  47. 2026-09-15 03:12 UTCEPSS rescore
  48. 2026-09-14 20:47 UTCGHSA enrichment
  49. 2026-09-14 09:24 UTCGHSA enrichment
  50. 2026-09-13 22:00 UTCEG score recompute
  51. 2026-09-13 22:00 UTCGHSA enrichment
  52. 2026-09-13 10:36 UTCGHSA enrichment
  53. 2026-09-12 23:12 UTCEG score recompute
  54. 2026-09-12 23:12 UTCGHSA enrichment
  55. 2026-09-12 15:02 UTCEPSS rescore
  56. 2026-09-12 11:48 UTCGHSA enrichment
  57. 2026-09-12 00:24 UTCEG score recompute
  58. 2026-09-12 00:24 UTCGHSA enrichment
  59. 2026-09-11 14:53 UTCEPSS rescore
  60. 2026-09-11 13:00 UTCEG score recompute
  61. 2026-09-11 13:00 UTCGHSA enrichment
  62. 2026-09-11 00:59 UTCGHSA enrichment
  63. 2026-09-10 13:35 UTCEG score recompute
  64. 2026-09-10 13:35 UTCGHSA enrichment
  65. 2026-09-10 09:35 UTCEPSS rescore
  66. 2026-09-10 02:11 UTCGHSA enrichment
  67. 2026-09-09 14:47 UTCGHSA enrichment
  68. 2026-09-09 02:40 UTCEG score recompute
  69. 2026-09-09 02:40 UTCGHSA enrichment
  70. 2026-09-08 22:01 UTCEPSS rescore
  71. 2026-09-08 03:21 UTCEG score recompute
  72. 2026-09-08 03:21 UTCGHSA enrichment
  73. 2026-09-07 15:57 UTCGHSA enrichment
  74. 2026-09-07 04:33 UTCGHSA enrichment
  75. 2026-09-06 17:04 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-75917?
CVE-2026-75917 is a high vulnerability published on August 19, 2026. SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file-tree picker's hover-tooltip generation (app/src/util/pathName.ts, getLeaf()/movePathTo()) used by the 'move/link to' path-selection dialogs, where document metadata fields (bookmark, alias, memo, and an alternate name…
When was CVE-2026-75917 disclosed?
CVE-2026-75917 was first published on August 19, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75917 actively exploited?
CVE-2026-75917 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75917?
CVE-2026-75917 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75917?
A fix for CVE-2026-75917 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75917 are linked in the Vendor Advisories panel on this page.

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