CVE-2023-28819 json
Concrete CMS (previously concrete5) is vulnerable to stored XSS in uploaded file and folder names
published 2023-04-28 3 y ago modified 2026-09-10 1 mo ago also GHSA-474f-mcjv-pgrm , EUVD-2023-1182
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
Concrete CMS (previously concrete5) versions 8.5.12 and below, 9.0.0 through 9.0.2 is vulnerable to Stored XSS in uploaded file and folder names.
Patch / fix
- packagist concrete5/concrete5 9.1.0
- concretecms concrete_cms 9.1.0
Exploit prediction
0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.5 | CVSS:3.1/AC:L/AV:N/A:N/C:L/I:L/PR:H/S:U/UI:R |
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | concrete5/concrete5 | <9.1.0 |
9.1.0 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/concretecms/concretecms/pull/11749
web
-
concretecms.org
/about/project-news/security/concrete-cms-security-advisory-2023-04-20
web, vendor-advisory
-
github.com
/concretecms/concretecms/releases
web, release-notes
-
concretecms.org
/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release
web
-
nvd.nist.gov
/vuln/detail/CVE-2023-28819
advisory
-
github.com
/concretecms/concretecms/releases/tag/8.5.13
web
Sources
- CVE List CVE-2023-28819
- GitHub Advisory GHSA-474f-mcjv-pgrm
- NVD CVE-2023-28819
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.