Medium

Umbraco Allows a Restricted Editor User to Delete Media Item or Access Unauthorized Content

Disclosed: 11.03.2025
Updated: 11.10.2026 11:23

Impact

Via manipulation of backoffice API URLs it's possible for authenticated backoffice users to retrieve or delete content or media held within folders the editor does not have access to.

Patches

Will be patched in 10.8.9 and 13.7.1

Workarounds

None available.

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
.NET (NuGet)	Umbraco.Cms.Web.Backoffice	< 10.8.9, >= 11.0.0-rc1, < 13.7.1	10.8.9, 13.7.1

References

CVSS score 4.9/10

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-285, CWE-863
Platform: .NET (NuGet)
Package: Umbraco.Cms.Web.Backoffice
Disclosed: 11.03.2025
Updated: 11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-wx5h-wqfq-v698 - CC BY 4.0

Vulnerability history: Umbraco.Cms.Web.Backoffice

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries: 4
First → latest: 07.2023 03.2025
Without a fix: 0
Exploited in attacks: 0

Severity breakdown

High 1
Medium 3

Disclosures per year

2023: 1
2024: 2
2025: 1
2026: 0

11.03.2025

Umbraco Allows a Restricted Editor User to Delete Media Item or Access Unauthorized Content this entry

Medium · 4.9 CVE-2025-27602 < 10.8.9, >= 11.0.0-rc1, < 13.7.1 10.8.9, 13.7.1
21.05.2024

Umbraco CMS Open Redirect Bypass Protection

Medium · 6.1 CVE-2024-34071 >= 8.18.5, < 8.18.14, >= 10.5.0, < 10.8.6, >= 12.0.0, < 12.3.10, >= 13.0.0, < 13.3.1 8.18.14, 10.8.6, 12.3.10, 13.3.1
17.04.2024

Blind SSRF Leads to Port Scan by using Webhooks

Medium · 4.1 CVE-2024-29035 >= 13.0.0, < 13.1.1 13.1.1
13.07.2023

Umbraco allows possible Admin-level access to backoffice without Auth under rare conditions

High · 7.5 CVE-2023-37267 >= 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

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