CVE-2021-42227 json
Cross site scripting in kindeditor
published 2021-10-14 5 y ago modified 2026-06-17 4 mo ago also GHSA-wv83-jrfh-rp33 , EUVD-2021-2269
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
Cross SIte Scripting (XSS) vulnerability exists in KindEditor 4.1.x via a Google search inurl:/examples/uploadbutton.html and then the .html file on the website that uses this editor (the file suffix is allowed).
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/kindsoft/kindeditor/issues/336 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 | kindeditor | <=4.1.12 |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/kindsoft/kindeditor/issues/336
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-42227
advisory
-
github.com
/kindsoft/kindeditor
package
Sources
- CVE List CVE-2021-42227
- GitHub Advisory GHSA-wv83-jrfh-rp33
- NVD CVE-2021-42227
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