CVE-2020-28249

MEDIUM

Joplin < 1.3.11 - Stored Cross-Site Scripting via LINK Element in Note

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-28249. PoCs published by Philip Holbrook.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in Joplin 1.2.6 by bypassing the HTML filter using a maliciously crafted link tag. The payload executes arbitrary JavaScript when rendered in a note.

Description

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

Exploits (1)

exploitdb WORKING POC
by Philip Holbrook · textwebappsmultiple
https://www.exploit-db.com/exploits/49024

This exploit demonstrates a stored XSS vulnerability in Joplin 1.2.6 by bypassing the HTML filter using a maliciously crafted link tag. The payload executes arbitrary JavaScript when rendered in a note.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Joplin 1.2.6
No auth needed
Prerequisites: Ability to create or edit a note in Joplin
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/laurent22/joplin/releases
Exploit, Third Party Advisory x_refsource_misc
https://github.com/fhlip0/JopinXSS

Scores

CVSS v3 6.1
EPSS 0.0043
EPSS Percentile 62.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
joplin_project/joplin 1.2.6
npm/joplin 0 - 1.3.11npm
Published Nov 06, 2020
Tracked Since Feb 18, 2026