CVE-2026-48996Public exploitHinoki check available

Code execution via unescaped GeoMap marker titles

Published Aug 27, 2026 · Updated Aug 27, 2026

Cross-site scripting in Trilium Notes 0.103.0 and earlier allows attackers to execute code via a malicious imported GeoMap. The GeoMap buildIcon() function interpolates an imported marker note title into raw HTML that Leaflet assigns to innerHTML without sanitization. Execution requires a user to import the archive and render its GeoMap; on desktop, Electron Node integration turns the injected event handler into arbitrary code execution.

CVSS severity9.3
Critical
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-site scripting in Trilium Notes 0.103.0 and earlier allows attackers to execute code via a malicious imported GeoMap. The GeoMap buildIcon() function interpolates an imported marker note title into raw HTML that Leaflet assigns to innerHTML without sanitization. Execution requires a user to import the archive and render its GeoMap; on desktop, Electron Node integration turns the injected event handler into arbitrary code execution.

The record

CVE
CVE-2026-48996
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Trilium Next
Product
Trilium Notes
Classifications
T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.104.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Trilium Next · Trilium Notesversion=< 0.104.0

Published CVSS scores

9.3GitHubCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1204.002Malicious File
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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