CVE-2015-8813

Umbraco CMS vulnerable to CSRF

8.2 HighFix available

The Page_Load function in Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: High
Availability: None

Exploit likelihood

11.2%Up 9.8 points since Feb 4, 2022

What each source reports

NVD Score used 8.2

Record: CVE-2015-8813
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-918
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-8813
Updated: 2026-11-02

EUVDEUVD-2022-5692 No score

Record: EUVD-2022-5692
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x34j-wxq8-7vcm 8.2

Umbraco CMS vulnerable to CSRF

The Page_Load function in Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.

Record: GHSA-x34j-wxq8-7vcm
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
Weakness: CWE-918
Updated: 2026-11-02

OSVGHSA-x34j-wxq8-7vcm 8.2

Umbraco CMS vulnerable to CSRF

Record: GHSA-x34j-wxq8-7vcm
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
Weakness: CWE-918
Updated: 2026-11-02

Affected products

umbraco

Affected packages

Affected packages
Package	Affected	Fixed
`Umbraco.CMS` NuGet	before 7.4.0	7.4.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Umbraco <7.4.0- Server-Side Request Forgery

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-8813 is a high vulnerability (CVSS 8.2) in Umbraco, published March 3, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 11.2%, the 95th percentile. Fixed in Umbraco.CMS 7.4.0.