Read the docs
TI-2026-27696 Aliases CVE-2026-35593

Trilium Notes has Local File Inclusion via upload modified file API endpoint

Priority MEDIUM 63CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

Trilium Notes is an open-source, cross-platform hierarchical note taking application for building large personal knowledge bases. Versions 0.102.1 and prior are vulnerable to Local File Inclusion, allowing an authenticated attacker to read sensitive arbitrary files from the server's filesystem. The uploadModifiedFileToAttachment function, which is called when a POST request is received to /api/attachments/{attachmentId}/upload-modified-file, replaces the content of the attachment with the content from another file (whose path is provided in filePath of Request body). After which the content of the attachment can be viewed at /api/attachments/{attachmentId}/download. This exposes sensitive system files such as SSH keys, credentials, configs, and OS files, potentially leading to remote code execution and compromise of co-hosted applications. This issue has been fixed in version 0.102.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00621 50th percentileScored 2026-11-07
Fix Fixed Trilium (TriliumNext): 0.102.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TriliumNextTriliumbefore 0.102.20.102.2Patch availableCNA
  • Trilium VendorTriliumNext Affected before 0.102.2 Fixed in 0.102.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:triliumnotes:trilium:*:*:*:*:*:*:*:*——TriliumNext
  • cpe:2.3:a:triliumnotes:trilium:*:*:*:*:*:*:*:* Versions — — ·TriliumNext

Remediation

  • Fix · CNA Trilium (TriliumNext) Fixed in 0.102.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35593
  2. 2026-10-25 EPSS moved to the below the 50th percentile
  3. 2026-11-07 EPSS moved to the 50th–90th percentile

References

Other 2

  • TI-2026-28300 Trilium Notes: Authentication Bypass in Clipper API for Electron (Desktop) Builds CVSS 3.1HIGH 8.6
  • TI-2026-36250 Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client CVSS 4.0CRITICAL 9.3
  • TI-2026-33410 Trilium Notes : Note Import to RCE via #docName Path Traversal (Safe Import Enabled) CVSS 4.0CRITICAL 9.3
  • TI-2026-38639 Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml CVSS 4.0CRITICAL 9.3
  • TI-2026-54012 Trilium unauthenticated share-search discloses password-protected and hidden shared notes CVSS 3.1HIGH 7.5
  • TI-2026-35228 Code injection in TriliumNext Trilium CVSS 4.0HIGH 8.6
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences