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  4. CVE 2026 105784 joplin whiteboard card rendering allows css
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Back to active CVEs
Medium · CVSS 4.6CVE-2026-105784

Joplin whiteboard card rendering allows CSS injection into application chromeCVE-2026-105784

Answer in brief

CVE-2026-105784 records a Medium severity (CVSS 4.6) vulnerability in Joplin whiteboard card rendering allows CSS injection into application chrome. The current sources do not mark it as known exploited. The current feed maps laurent22/joplin (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 5, 2026Updated Oct 5, 2026Source checked Oct 6, 2026First seen by HOL Oct 5, 2026Material review Oct 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 4.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps laurent22/joplin (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
laurent22/joplingeneric<3.7.133.7.13

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for laurent22/joplin.
  2. 2Review the reported fix. Update laurent22/joplin to 3.7.13 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, selecting a note containing a jsoncanvas fence causes the whiteboard text and file-node components in packages/app-desktop/gui/NoteEditor/NoteBody/WhiteboardEditor/nodes/TextNode.tsx and packages/app-desktop/gui/NoteEditor/NoteBody/WhiteboardEditor/nodes/FileNode.tsx to render card content with the full Markdown renderer. The components insert the resulting HTML into the main application document through dangerouslySetInnerHTML. A malicious note can inject style elements and remote CSS imports that modify trusted application chrome, signal when the note is opened, and potentially disclose exposed attribute values. Content Security Policy blocks inline script execution, so the supported impact is CSS injection and UI redressing rather than code execution. This issue is fixed in version 3.7.13.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Joplin Web Clipper pairing allows cross-origin theft of a permanent API tokenSame laurent22/joplin package
  • Joplin Server password reset accepts tokens issued for unrelated purposesSame laurent22/joplin package
  • Joplin: Unauthenticated account takeover via an attacker-chosen application-authorisation identifierSame laurent22/joplin package
  • Newell Brands DYMO ID document parsing failing file type extension authentication checkSame generic ecosystem
  • Newell Brands DYMO ID parent directory open to path traversal through improper spheres of controlSame generic ecosystem
  • Bake filesystem entitlement consent is skipped for certain secret and oci-layout definitionsSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 6, 2026
References
4 linked sources
Open source record