CVE-2020-28249 json
Cross-site scripting in Joplin
published 2020-11-06 6 y ago modified 2026-06-17 4 mo ago also GHSA-q26w-wjj2-22vv , EUVD-2021-1156
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.1%
- EPSS 3.1% chance of exploitation in 30 days, percentile 87%
- public exploits
- 1
- Exploit-DB
Summary
Joplin 1.2.6 for Desktop allows XSS via a LINK element in a note.
Patch / fix
- npm joplin 1.3.11
Timeline
- Published
- First public exploit (EDB-49024)
Exploit prediction
3.06% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-49024 Joplin 1.2.6 - 'link' Cross Site Scripting webapps, 2020-11-09
- github.com https://github.com/fhlip0/JopinXSS referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | joplin | <1.3.11 |
1.3.11 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/laurent22/joplin/commit/fd90a490c0e5cacd17bfe0ffc422be1d2a9b1c13
web
-
github.com
/fhlip0/JopinXSS
web, exploit, third-party-advisory
-
github.com
/laurent22/joplin/releases
third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-28249
advisory
-
github.com
/laurent22/joplin/releases/tag/v1.3.11
web
-
npmjs.com
/package/joplin
web
Sources
- CVE List CVE-2020-28249
- GitHub Advisory GHSA-q26w-wjj2-22vv
- NVD CVE-2020-28249
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.