Umbraco CMS Backoffice User can bypass "Publish" restriction

published 2023-12-12 2 y ago modified 2026-09-10 1 mo ago also GHSA-335x-5wcm-8jv2 , EUVD-2023-3077

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.3.0, Backoffice users with send for approval permission but not publish permission are able to publish in some scenarios. Versions 8.18.10, 10.7.0, and 12.3.0 contains a patch for this issue. No known workarounds are available.

Patch / fix

fixed in 2

nuget Umbraco.CMS 8.18.10, 10.8.0, 12.3.0
umbraco umbraco_cms 8.18.10, 10.7.0, 12.3.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-08-28)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub	3.1	0.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
nuget	Umbraco.CMS	>=8.0.0, <8.18.10 >=9.0.0, <10.8.0 >=11.0.0, <12.3.0	8.18.10 10.8.0 12.3.0

Affected products

umbraco Umbraco-CMS

Classification

Weakness

CWE-863 Incorrect Authorization

References

github.com /umbraco/Umbraco-CMS/security/advisories/GHSA-335x-5wcm-8jv2
web, url-repurposed
nvd.nist.gov /vuln/detail/CVE-2023-48227
advisory
github.com /umbraco/Umbraco-CMS
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary