CVE-2026-45375

CRITICALNVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-13. NVD baseline CVSS 9.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.0Exploit: Elevated riskExposed: 0

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

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan's Bazaar (community marketplace) renders the name and version fields of a package's plugin.json (and the equivalent theme.json / template.json / widget.json / icon.json) into the Settings → Marketplace UI without HTML escaping. The kernel-side helper sanitizePackageDisplayStrings in kernel/bazaar/package.go HTML-escapes only Author, DisplayName, and Description — Name and Version flow through to the renderer raw. The frontend at app/src/config/bazaar.ts substitutes them into HTML template strings via ${item.preferredName} / ${data.name} / v${data.version} and assigns the result to innerHTML. As a consequence, malicious HTML in either field is parsed and executed when a user opens the marketplace tab. This vulnerability is fixed in 3.7.0.

CVSS v3
9.0
EG Score
9.0(medium)
EG Risk
57(Track*)
EG Risk 57/100SSVC: 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
Severity90% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 16, 2026

Advisory Details (1)

Auto-updated May 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

SiYuan Bazaar marketplace renders unescaped package `name` and `version` metadata, allowing stored XSS and Electron code execution · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-27qc-m5gf-jv5r

Vendor Advisories for CVE-2026-45375(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/siyuan-note/siyuan/kernel—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/siyuan-note/siyuan/kernel———

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 110× 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 307 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-45375?
CVE-2026-45375 is a critical vulnerability published on May 14, 2026. SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan's Bazaar (community marketplace) renders the name and version fields of a package's plugin.json (and the equivalent theme.json / template.json / widget.json / icon.json) into the Settings → Marketplace UI without…
When was CVE-2026-45375 disclosed?
CVE-2026-45375 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45375 actively exploited?
CVE-2026-45375 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.1% of all scored CVEs.
What is the CVSS score of CVE-2026-45375?
CVE-2026-45375 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-45375?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45375, 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.

Dependency Blast Radius

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