CVE-2026-65606

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-23. the CNA's CVSS baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.6Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler. When a siyuan://plugins/ link references a name that is not an installed plugin, the application opens a custom tab and inserts the link's icon parameter into the tab header via innerHTML without escaping it (app/src/layout/Tab.ts), allowing injection of an element. Because the SiYuan Desktop renderer runs with nodeIntegration:true, the injected JavaScript can access Node's require and call require('child_process').execSync(...), escalating the cross-site scripting into arbitrary operating-system command execution.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
59(Track*)
EG Risk 59/100SSVC: Track*

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
Severity96% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 28, 2026

Advisory Details (3)

Auto-updated Aug 23, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

SiYuan before v3.7.2 Cross-Site Scripting to RCE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-to-rce
github_commit

commit 41f2861c8757 (siyuan-note/siyuan)

Fix landed in siyuan-note/siyuan commit 41f2861c8757 — awaiting tagged release

https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70
github Patch Available🟡 PoC Available

`siyuan://` tab icon XSS to RCE · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wp64-x7qh-h728

Vendor Advisories for CVE-2026-65606(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 40× in last 7d / 231× 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 284 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-65606?
CVE-2026-65606 is a critical vulnerability published on July 23, 2026. SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler. When a siyuan://plugins/<name> link references a name that is not an installed plugin, the application opens a custom tab and inserts the link's icon parameter into the tab header via innerHTML…
When was CVE-2026-65606 disclosed?
CVE-2026-65606 was first published in the National Vulnerability Database on July 23, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65606 actively exploited?
CVE-2026-65606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 46.7% of all scored CVEs.
What is the CVSS score of CVE-2026-65606?
CVE-2026-65606 has a CVSS v4.0 base score of 9.6 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-65606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65606, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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