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TI-2020-17158 Aliases CVE-2020-28249GHSA-q26w-wjj2-22vv

Joplin 1.2.6 for Desktop allows XSS via a LINK element in a note.

Priority LOW 33CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Joplin 1.2.6 for Desktop allows XSS via a LINK element in a note.

Why it matters now

EPSS 0.03063 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed joplin (npm): 1.3.11

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—joplin (npm)before 1.3.111.3.11Patch availableGHSA-q26w-wjj2-22vv
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • joplin (npm) Vendor— Affected before 1.3.11 Fixed in 1.3.11 Patch available GHSA-q26w-wjj2-22vv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:joplin_project:joplin:1.2.6:*:*:*:*:*:*:*1.2.6Vulnerablelaurent22
  • cpe:2.3:a:joplin_project:joplin:1.2.6:*:*:*:*:*:*:* Versions 1.2.6 Vulnerable ·laurent22

Remediation

  • Fix · GHSA-q26w-wjj2-22vv joplin (npm) Fixed in 1.3.11 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28249
  2. 2026-10-03 Alias added: GHSA-q26w-wjj2-22vv

References

Exploit 1

Advisory 2

Other 3

  • TI-2023-24472 Arbitrary code execution on click of PDF links in Joplin CVSS 3.1CRITICAL 9.0
  • TI-2024-32950 Remote Code Execution on click of <a> Link in markdown preview CVSS 3.1CRITICAL 9.6
  • TI-2024-27054 Joplin has a parsing error leading to Cross-site Scripting (XSS) CVSS 3.1CRITICAL 9.7
  • TI-2025-17795 Cross-site Scripting (XSS) in Rich Text Editor allows arbitrary code execution in Joplin CVSS 3.1CRITICAL 9.6
  • TI-2025-19991 Privilege escalation in Joplin server via user patch endpoint CVSS 3.1HIGH 8.8
  • TI-2024-35730 Lack of validation on openExternal allows 1 click remote code execution in joplin CVSS 3.1HIGH 8.8
See all 21 →

Sources

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