CVE-2026-45733

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (35th 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
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. Prior to 0.103.0, the #iconClass label value is returned raw by getNoteIcon() and inserted without HTML attribute encoding into class attributes in apps/client/src/widgets/quick_search.ts and apps/client/src/services/note_autocomplete.ts, allowing a stored payload to execute automatically when a victim opens a new tab or uses Ctrl+J and, because Electron enables nodeIntegration and disables contextIsolation, run operating-system commands as the victim. This issue is fixed in version 0.103.0.

CVSS v3
8.3
EG Score
8.3HIGHmedium confidence
EG Risk
53
EG Risk 53/100CISA 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
Severity83% × 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
0.4%
EPSS %ILE
35th
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

August 18, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)🟡 PoC Available

Stored XSS in note icon rendering leads to Remote Code Execution in Electron desktop app · Advisory · TriliumNext/Trilium · GitHub

https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg
github_release Patch Available

v0.103.0

Patch available: TriliumNext/Trilium v0.103.0

https://github.com/TriliumNext/Trilium/releases/tag/v0.103.0
github_commit

commit c06939448bcc (TriliumNext/Trilium)

Fix landed in TriliumNext/Trilium commit c06939448bcc — awaiting tagged release

https://github.com/TriliumNext/Trilium/commit/c06939448bcc2879fc3c4d328ff7dc63ed6b5009

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 21:39 UTCEG score recompute
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-06 08:24 UTCEG score recompute
  7. 2026-10-05 17:43 UTCEPSS rescore
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  9. 2026-10-04 23:22 UTCEPSS rescore
  10. 2026-10-03 17:40 UTCEG score recompute
  11. 2026-10-03 14:25 UTCEPSS rescore
  12. 2026-10-02 01:28 UTCEG score recompute
  13. 2026-10-01 19:50 UTCEPSS rescore
  14. 2026-09-30 22:43 UTCEG score recompute
  15. 2026-09-30 15:03 UTCEPSS rescore
  16. 2026-09-30 09:51 UTCEG score recompute
  17. 2026-09-28 23:28 UTCEG score recompute
  18. 2026-09-27 21:19 UTCEG score recompute
  19. 2026-09-27 13:48 UTCEPSS rescore
  20. 2026-09-27 07:57 UTCEG score recompute
  21. 2026-09-26 15:58 UTCEPSS rescore
  22. 2026-09-25 01:30 UTCEG score recompute
  23. 2026-09-23 22:11 UTCEG score recompute
  24. 2026-09-23 17:53 UTCEPSS rescore
  25. 2026-09-22 20:27 UTCEG score recompute
Show 62 more
  1. 2026-09-22 04:40 UTCEG score recompute
  2. 2026-09-21 01:48 UTCEG score recompute
  3. 2026-09-20 20:15 UTCEPSS rescore
  4. 2026-09-19 23:46 UTCEG score recompute
  5. 2026-09-18 20:21 UTCEG score recompute
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 00:15 UTCEG score recompute
  8. 2026-09-17 19:31 UTCEPSS rescore
  9. 2026-09-16 21:57 UTCEG score recompute
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 15:19 UTCEG score recompute
  13. 2026-09-14 00:19 UTCEG score recompute
  14. 2026-09-13 16:47 UTCEPSS rescore
  15. 2026-09-12 22:35 UTCEG score recompute
  16. 2026-09-12 15:01 UTCEPSS rescore
  17. 2026-09-11 20:51 UTCEG score recompute
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-11 09:37 UTCEPSS rescore
  20. 2026-09-10 19:01 UTCEG score recompute
  21. 2026-09-10 09:34 UTCEPSS rescore
  22. 2026-09-09 03:26 UTCEG score recompute
  23. 2026-09-08 22:00 UTCEPSS rescore
  24. 2026-09-07 23:18 UTCEG score recompute
  25. 2026-09-07 16:01 UTCEPSS rescore
  26. 2026-09-06 20:45 UTCEG score recompute
  27. 2026-09-06 13:47 UTCEPSS rescore
  28. 2026-09-05 19:00 UTCEG score recompute
  29. 2026-09-04 17:12 UTCEG score recompute
  30. 2026-09-04 05:06 UTCEPSS rescore
  31. 2026-09-03 01:55 UTCEG score recompute
  32. 2026-09-02 14:12 UTCEPSS rescore
  33. 2026-09-01 23:56 UTCEG score recompute
  34. 2026-09-01 13:54 UTCEPSS rescore
  35. 2026-09-01 11:04 UTCEG score recompute
  36. 2026-08-30 20:13 UTCEG score recompute
  37. 2026-08-30 19:17 UTCEPSS rescore
  38. 2026-08-30 07:20 UTCEG score recompute
  39. 2026-08-30 01:22 UTCEPSS rescore
  40. 2026-08-29 03:58 UTCEG score recompute
  41. 2026-08-28 21:41 UTCEPSS rescore
  42. 2026-08-27 20:03 UTCEG score recompute
  43. 2026-08-27 14:25 UTCEPSS rescore
  44. 2026-08-26 18:13 UTCEG score recompute
  45. 2026-08-26 14:46 UTCEPSS rescore
  46. 2026-08-25 15:58 UTCEG score recompute
  47. 2026-08-25 13:49 UTCEPSS rescore
  48. 2026-08-25 03:07 UTCEG score recompute
  49. 2026-08-24 14:14 UTCEG score recompute
  50. 2026-08-23 12:30 UTCEG score recompute
  51. 2026-08-23 00:19 UTCEPSS rescore
  52. 2026-08-22 10:46 UTCEG score recompute
  53. 2026-08-21 23:49 UTCEPSS rescore
  54. 2026-08-21 08:58 UTCEG score recompute
  55. 2026-08-20 22:55 UTCEPSS rescore
  56. 2026-08-19 18:20 UTCEG score recompute
  57. 2026-08-19 17:04 UTCEPSS rescore
  58. 2026-08-18 16:34 UTCEG score recompute
  59. 2026-08-18 15:45 UTCEG score recompute
  60. 2026-08-18 15:19 UTCEG score recompute
  61. 2026-08-18 15:15 UTCEG score recompute
  62. 2026-08-18 15:14 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-45733?
CVE-2026-45733 is a high vulnerability published on August 18, 2026. Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. Prior to 0.103.0, the #iconClass label value is returned raw by getNoteIcon() and inserted without HTML attribute encoding into class attributes in…
When was CVE-2026-45733 disclosed?
CVE-2026-45733 was first published on August 18, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45733 actively exploited?
CVE-2026-45733 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45733?
CVE-2026-45733 has a CVSS base score of 8.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45733?
A fix for CVE-2026-45733 is available: update to the fixed version the vendor names in its advisory.

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