CVE-2020-19626 json
Craft CMS Cross-site Scripting Vulnerability
published 2021-03-26 5 y ago modified 2026-06-17 4 mo ago also GHSA-33jj-92px-m4g7 , EUVD-2022-2097
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
Cross Site Scripting (XSS) vulnerability in craftcms 3.1.31, allows remote attackers to inject arbitrary web script or HTML, via /admin/settings/sites/new.
Patch / fix
Exploit prediction
0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- mayoterry.com http://mayoterry.com/file/cve/XSS_vuluerability_in_Craftcms_3.1.31.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | craftcms/cms | <3.1.33 |
3.1.33 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/craftcms/cms/commit/76a2168b6a5e30144f5c06da4ff264f4eca577ff
web, patch, third-party-advisory
-
mayoterry.com
/file/cve/XSS_vuluerability_in_Craftcms_3.1.31.pdf
exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-19626
advisory
-
web.archive.org
/web/20211209121705/http://mayoterry.com/file/cve/XSS_vuluerability_in_Craftcms_3.1.31.pdf
web
Sources
- CVE List CVE-2020-19626
- GitHub Advisory GHSA-33jj-92px-m4g7
- NVD CVE-2020-19626
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