CVE-2026-32940

CRITICALNVD 6.19.3▲
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-17. NVD baseline CVSS 6.1; sources differ by 3.2.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. The unauthenticated /api/icon/getDynamicIcon endpoint serves user-controlled input (via the content parameter) directly into SVG markup using fmt.Sprintf with no escaping, served as Content-Type: image/svg+xml. This creates a click-through XSS: a victim navigates to a crafted URL, sees an SVG with an injected link, and clicking it triggers JavaScript via the bypassed MIME types. The attack requires direct navigation to the endpoint or / embedding, since tag rendering in the frontend doesn't allow interactive links. This issue has been fixed in version 3.6.1.

CVSS v3
6.1
EG Score
9.3(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

March 20, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github Patch Available

SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183) · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4mx9-3c2h-hwhg
github_release Patch Available

Improve details

Patch available: siyuan-note/siyuan v3.6.1

https://github.com/siyuan-note/siyuan/releases/tag/v3.6.1
github_commit

commit d01d561875d4 (siyuan-note/siyuan)

Fix landed in siyuan-note/siyuan commit d01d561875d4 — awaiting tagged release

https://github.com/siyuan-note/siyuan/commit/d01d561875d4f744e9f6232f1d4831e3642b8696
github Patch Available🟡 PoC Available

SiYuan: Unauthenticated Reflected XSS via SVG Injection in /api/icon/getDynamicIcon Endpoint · CVE-2026-29183 · GitHub Advisory Database · GitHub

https://github.com/advisories/GHSA-6865-qjcf-286f

Patch Availability(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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.

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

Frequently asked(5)

What is CVE-2026-32940?
CVE-2026-32940 is a critical vulnerability published on March 20, 2026. SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. The…
When was CVE-2026-32940 disclosed?
CVE-2026-32940 was first published in the National Vulnerability Database on March 20, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-32940 actively exploited?
CVE-2026-32940 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 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-32940?
CVE-2026-32940 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.3.
How do I remediate CVE-2026-32940?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32940, 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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