CVE-2023-28819
Status: ModifiedMedium (5.4)—
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.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Base score: 5.4
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.64%
- Percentile among all scored CVEs: 49
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-79
References
- https://github.com/concretecms/concretecms/releases
- https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release
- https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
- https://github.com/concretecms/concretecms/releases
- https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release
- https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
Raw JSON (NVD)
Show
{
"id": "CVE-2023-28819",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 3.5,
"attackVector": "NETWORK",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "LOW"
},
"impactScore": 2.5,
"exploitabilityScore": 0.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 5.4,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "LOW"
},
"impactScore": 2.7,
"exploitabilityScore": 2.3
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2023-04-28T14:15:10.657",
"references": [
{
"url": "https://github.com/concretecms/concretecms/releases",
"tags": [
"Release Notes"
],
"source": "cve@mitre.org"
},
{
"url": "https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release",
"source": "cve@mitre.org"
},
{
"url": "https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/concretecms/concretecms/releases",
"tags": [
"Release Notes"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"lastModified": "2026-06-17T05:48:50.283",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F6D15F6B-68AA-45B6-B98D-F2C1671263F2",
"versionEndExcluding": "9.1.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}