CVE-2023-37267 json
Umbraco allows possible Admin-level access to backoffice without Auth under rare conditions
published 2023-07-13 3 y ago modified 2026-06-17 4 mo ago also GHSA-h8wc-r4jh-mg7m , EUVD-2023-2073
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
Umbraco is a ASP.NET CMS. Under rare conditions a restart of Umbraco can allow unauthorized users access to admin-level permissions. This vulnerability was patched in versions 10.6.1, 11.4.2 and 12.0.1.
Patch / fix
- nuget Umbraco.Cms.Infrastructure 10.6.1, 11.4.2, 12.0.1
- nuget Umbraco.Cms.Web.BackOffice 10.6.1, 11.4.2, 12.0.1
- umbraco umbraco_cms 10.6.1, 11.4.2, 12.0.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Umbraco.Cms.Infrastructure | >=9.0.0, <10.6.1 >=11.0.0, <11.4.2 >=12.0.0, <12.0.1 |
10.6.1 11.4.2 12.0.1 |
| nuget | Umbraco.Cms.Web.BackOffice | >=9.0.0, <10.6.1 >=11.0.0, <11.4.2 >=12.0.0, <12.0.1 |
10.6.1 11.4.2 12.0.1 |
Affected products
- umbraco Umbraco-CMS
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/umbraco/Umbraco-CMS/commit/1f26f2c6f3428833892cde5c6d8441fb041e410e
web, patch
-
github.com
/umbraco/Umbraco-CMS/commit/20a4e475c8d7b91d263e4e103ef19f3644e7b569
web, patch
-
github.com
/umbraco/Umbraco-CMS/commit/82eae48d098b9deecbdf86cf288b2b18020e1fed
web, patch
-
github.com
/umbraco/Umbraco-CMS/security/advisories/GHSA-h8wc-r4jh-mg7m
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-37267
advisory
-
github.com
/umbraco/Umbraco-CMS
package
Sources
- CVE List CVE-2023-37267
- GitHub Advisory GHSA-h8wc-r4jh-mg7m
- NVD CVE-2023-37267
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