CVE-2026-56395

✕ Withdrawn — historical dataCRITICALPre-NVD 9.6
9.6CVSS

SiYuan before v3.6.1 fails to sanitize package metadata and README content in the Bazaar marketplace, allowing malicious package authors to inject arbitrary HTML and JavaScript. Attackers can achieve remote code execution on any user browsing the Bazaar by embedding XSS payloads in package displayName, description, or README fields, exploiting Electron's nodeIntegration setting to execute OS commands.

CVSS v3
9.6
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EG Score
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EG Risk
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EPSS PROB
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EPSS %ILE
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KEV
—Not applicable: this CVE ID was withdrawn

Published

June 21, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Oct 7, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Remote Code Execution via Malicious Bazaar Package — Marketplace XSS · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v3mg-9v85-fcm7
generic

SiYuan - Remote Code Execution via Malicious Bazaar Package Metadata and README | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-remote-code-execution-via-malicious-bazaar-package-metadata-and-readme

Vendor Advisories for CVE-2026-56395(1)

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

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFix by version rangeDependents
github.com/siyuan-note/siyuan/kernel—
  • every version through 0.0.0-20260313024916-fd6526133bb3: no fix on record
  • every version up to 0.0.0-20260317012524-fe4523fff2c8: fixed in 0.0.0-20260317012524-fe4523fff2c8
—
siyuan—
  • every version through 0.0.0-20260313024916-fd6526133bb3: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 0× in last 7d / 13× 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 429 total refreshes for this CVE.

  1. 2026-10-03 13:39 UTCOSV refresh
  2. 2026-09-30 04:29 UTCEG score recompute▼ 9.60
  3. 2026-09-17 19:31 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 03:11 UTCEPSS rescore
  7. 2026-09-14 06:10 UTCGHSA enrichment
  8. 2026-09-14 02:10 UTCEG score recompute
  9. 2026-09-14 02:10 UTCGHSA enrichment
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-13 12:52 UTCEG score recompute
  12. 2026-09-13 12:52 UTCGHSA enrichment
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-10 09:35 UTCEPSS rescore
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-31 00:41 UTCGHSA enrichment
  23. 2026-08-30 20:41 UTCEG score recompute
  24. 2026-08-30 20:41 UTCGHSA enrichment
  25. 2026-08-30 19:17 UTCEPSS rescore
Show 75 more
  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-28 21:42 UTCEPSS rescore
  3. 2026-08-27 14:25 UTCEPSS rescore
  4. 2026-08-26 14:46 UTCEPSS rescore
  5. 2026-08-25 13:49 UTCEPSS rescore
  6. 2026-08-25 06:16 UTCGHSA enrichment
  7. 2026-08-25 02:16 UTCGHSA enrichment
  8. 2026-08-24 22:15 UTCEG score recompute
  9. 2026-08-24 22:15 UTCGHSA enrichment
  10. 2026-08-24 13:57 UTCEG score recompute
  11. 2026-08-24 13:57 UTCGHSA enrichment
  12. 2026-08-24 04:59 UTCGHSA enrichment
  13. 2026-08-23 23:57 UTCGHSA enrichment
  14. 2026-08-23 19:57 UTCGHSA enrichment
  15. 2026-08-23 15:57 UTCGHSA enrichment
  16. 2026-08-23 11:57 UTCGHSA enrichment
  17. 2026-08-23 07:54 UTCGHSA enrichment
  18. 2026-08-23 03:33 UTCEG score recompute
  19. 2026-08-23 03:33 UTCGHSA enrichment
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-22 22:54 UTCEG score recompute
  22. 2026-08-22 22:54 UTCGHSA enrichment
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 22:22 UTCGHSA enrichment
  25. 2026-08-21 18:14 UTCGHSA enrichment
  26. 2026-08-21 14:14 UTCGHSA enrichment
  27. 2026-08-21 09:26 UTCGHSA enrichment
  28. 2026-08-21 05:23 UTCGHSA enrichment
  29. 2026-08-21 00:25 UTCEG score recompute
  30. 2026-08-21 00:25 UTCGHSA enrichment
  31. 2026-08-20 22:55 UTCEPSS rescore
  32. 2026-08-20 20:24 UTCGHSA enrichment
  33. 2026-08-20 16:24 UTCGHSA enrichment
  34. 2026-08-20 12:23 UTCGHSA enrichment
  35. 2026-08-20 07:53 UTCEG score recompute
  36. 2026-08-20 07:53 UTCGHSA enrichment
  37. 2026-08-19 17:04 UTCEPSS rescore
  38. 2026-08-19 15:03 UTCGHSA enrichment
  39. 2026-08-19 11:01 UTCGHSA enrichment
  40. 2026-08-19 05:47 UTCEG score recompute
  41. 2026-08-19 05:47 UTCGHSA enrichment
  42. 2026-08-18 13:48 UTCEPSS rescore
  43. 2026-08-17 17:07 UTCEG score recompute
  44. 2026-08-17 17:06 UTCGHSA enrichment
  45. 2026-08-17 13:47 UTCEPSS rescore
  46. 2026-08-17 13:04 UTCGHSA enrichment
  47. 2026-08-17 09:04 UTCGHSA enrichment
  48. 2026-08-17 05:05 UTCGHSA enrichment
  49. 2026-08-17 01:05 UTCGHSA enrichment
  50. 2026-08-16 21:05 UTCGHSA enrichment
  51. 2026-08-16 17:04 UTCEG score recompute
  52. 2026-08-16 17:04 UTCGHSA enrichment
  53. 2026-08-16 14:56 UTCEPSS rescore
  54. 2026-08-16 13:04 UTCGHSA enrichment
  55. 2026-08-16 09:04 UTCGHSA enrichment
  56. 2026-08-16 05:04 UTCEG score recompute
  57. 2026-08-16 05:04 UTCGHSA enrichment
  58. 2026-08-16 02:14 UTCEPSS rescore
  59. 2026-08-16 01:04 UTCGHSA enrichment
  60. 2026-08-15 21:04 UTCGHSA enrichment
  61. 2026-08-15 17:04 UTCGHSA enrichment
  62. 2026-08-15 13:02 UTCGHSA enrichment
  63. 2026-08-15 08:49 UTCGHSA enrichment
  64. 2026-08-15 02:46 UTCEG score recompute
  65. 2026-08-15 02:46 UTCGHSA enrichment
  66. 2026-08-15 01:30 UTCEPSS rescore
  67. 2026-08-14 22:44 UTCGHSA enrichment
  68. 2026-08-14 18:44 UTCGHSA enrichment
  69. 2026-08-14 14:44 UTCGHSA enrichment
  70. 2026-08-14 10:44 UTCGHSA enrichment
  71. 2026-08-14 06:44 UTCGHSA enrichment
  72. 2026-08-14 02:44 UTCGHSA enrichment
  73. 2026-08-13 22:44 UTCEG score recompute
  74. 2026-08-13 22:44 UTCGHSA enrichment
  75. 2026-08-13 22:00 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(4)

What is CVE-2026-56395?
CVE-2026-56395 is a rejected CVE ID: its record was withdrawn on September 17, 2026 and no longer describes a vulnerability. Reason given: This record is a duplicate; use CVE-2026-56397 instead. Its record names CVE-2026-56397 as the replacement.
When was CVE-2026-56395 disclosed?
CVE-2026-56395 was first published on June 21, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-56395?
CVE-2026-56395 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-56395?
There is nothing to remediate under CVE-2026-56395: it is a rejected (withdrawn) CVE ID and no longer describes a vulnerability. Its record names CVE-2026-56397 as the replacement; act on that CVE instead.

Dependency Blast Radius

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