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Vulnerability details: VCID-ehsc-c1uh-tua1
Vulnerability ID VCID-ehsc-c1uh-tua1
Aliases CVE-2023-49278
GHSA-7x74-h8cw-qhxq
Summary Exposure of Sensitive Information to an Unauthorized Actor Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, a brute force exploit can be used to collect valid usernames. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-307 Improper Restriction of Excessive Authentication Attempts
System Score Found at
cvssv3.1 0.0 https://github.com/umbraco/Umbraco-CMS
generic_textual LOW https://github.com/umbraco/Umbraco-CMS
cvssv3.1 0.0 https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq
generic_textual LOW https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq
cvssv3.1 0.0 https://nvd.nist.gov/vuln/detail/CVE-2023-49278
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2023-49278
Reference id Reference type URL
https://github.com/umbraco/Umbraco-CMS
CVE-2023-49278 https://nvd.nist.gov/vuln/detail/CVE-2023-49278
GHSA-7x74-h8cw-qhxq https://github.com/advisories/GHSA-7x74-h8cw-qhxq
GHSA-7x74-h8cw-qhxq https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Found at https://github.com/umbraco/Umbraco-CMS
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Found at https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-7x74-h8cw-qhxq
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-49278
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:46:34.534436+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/UmbracoCms/CVE-2023-49278.yml 38.6.0