CVE-2026-8203
- Source
- https://cve.org/CVERecord?id=CVE-2026-8203
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8203.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-8203
- Aliases
- Published
- 2026-05-21T20:31:56.536Z
- Modified
- 2026-07-25T03:56:34.936105492Z
- Severity
-
- 7.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Concrete CMS 9.5.0 and below has Stored XSS on the height parameter
- Details
-
Concrete CMS 9.5.0 and below has Stored XSS on the height parameter. The controller does not validate or sanitize $height. Any user with editor privileges can inject malicious JavaScript that executes in the context of any visitor's browser, potentially leading to session hijacking, credential theft, or other malicious actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.3 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Alfin Joseph for reporting.
- Database specific
{ "cwe_ids": [ "CWE-79" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8203.json", "cna_assigner": "ConcreteCMS" }- References
Affected packages
Git / github.com/concretecms/concretecms
Affected ranges
- Type
- GIT
- Repo
- https://github.com/concretecms/concretecms
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*", "source": [ "AFFECTED_FIELD", "CPE_RANGE" ], "extracted_events": [ { "introduced": "5" }, { "last_affected": "9.5.0" }, { "introduced": "0" } ] }