CVE-2026-59833

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.6Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, SiYuan renders note and package content to HTML through the Lute engine with sanitization enabled, but Lute's dangerous javascript scheme block does not check form action or SVG xlink:href attributes, allowing stored cross-site scripting in document export-preview and Bazaar package README render paths that can execute OS commands in the Electron desktop renderer. This issue is fixed in versions 3.7.1.

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
0.5%
EPSS %ILE
43rd
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

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (3)

Auto-updated Jul 9, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)🟡 PoC Available

Stored XSS to RCE in SiYuan via a per-attribute URL-scheme sanitizer gap in Lute (form action / SVG xlink:href) · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-97xv-3v84-h358
github_release Patch Available

Improve details

Patch available: siyuan-note/siyuan v3.7.1

https://github.com/siyuan-note/siyuan/releases/tag/v3.7.1
github_commit

commit ebe252e61fb9 (siyuan-note/siyuan)

Fix landed in siyuan-note/siyuan commit ebe252e61fb9 — awaiting tagged release

https://github.com/siyuan-note/siyuan/commit/ebe252e61fb93f258d083b9da0fa403679fdf94a

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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 139 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-59833?
CVE-2026-59833 is a high vulnerability published on July 9, 2026. SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, SiYuan renders note and package content to HTML through the Lute engine with sanitization enabled, but Lute's dangerous javascript scheme block does not check form action or SVG xlink:href attributes, allowing stored…
When was CVE-2026-59833 disclosed?
CVE-2026-59833 was first published on July 9, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59833 actively exploited?
CVE-2026-59833 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59833?
CVE-2026-59833 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-2026-59833?
A fix for CVE-2026-59833 is available: update to the fixed version the vendor names in its advisory.

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