CVE-2026-18110
| Reporter | Title | Published | Views | Family All 11 |
|---|---|---|---|---|
 | Exploit for Missing Authorization in Concretecms Concrete_Cms | 28 Sep 202613:29 | – | githubexploit |
 | CVE-2026-18110 | 24 Sep 202614:07 | – | circl |
 | CVE-2026-18110 Concrete CMS 9.0.0 through 9.5.2 is vulnerable to missing authorization in the user selector autocomplete endpoint (/ccm/system/user/autocomplete), allowing an unauthenticated attacker to retrieve the complete backend user directory — internal ID, username | 15 Sep 202616:33 | – | cvelist |
 | EUVD-2026-78830 | 15 Sep 202616:33 | – | euvd |
 | CVE-2026-18110-PoC | 27 Oct 202602:23 | – | kitploit |
 | CVE-2026-18110 | 15 Sep 202616:33 | – | mend |
 | Concrete CMS - User Enumeration | 27 Oct 202602:09 | – | nuclei |
 | CVE-2026-18110 | 15 Sep 202617:17 | – | nvd |
 | PT-2026-92121 | 15 Sep 202600:00 | – | ptsecurity |
 | CVE-2026-18110: Missing Authorization | 15 Sep 202600:00 | – | rapid7 |
10
Node
[
{
"vendor": "Concrete CMS",
"product": "Concrete CMS",
"collectionURL": "https://github.com/concretecms/concretecms",
"repo": "https://github.com/concretecms/concretecms",
"versions": [
{
"status": "affected",
"version": "9.0.0",
"lessThanOrEqual": "9.5.2",
"versionType": "git"
}
],
"defaultStatus": "unaffected"
}
]| Source | Link |
|---|---|
| documentation | www.documentation.concretecms.org/developers/introduction/version-history/953-release-notes |
| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| query | path | /ccm/system/user/autocomplete | The /ccm/system/user/autocomplete endpoint fails to perform proper authorization checks. An unauthenticated attacker can submit an empty query to enumerate all backend accounts, including administrative users, disclosing internal IDs, usernames, and email addresses. | CWE-862 |
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22 Sep 2026 18:17Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 48.7
EPSS0.01592
SSVC