CVE-2015-8814

Umbraco CMS vulnerable to CSRF

8.8 HighFix available

Umbraco before 7.4.0 allows remote attackers to bypass anti-forgery security measures and conduct cross-site request forgery (CSRF) attacks as demonstrated by editing user account information in the templates.asmx.cs file.

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: High
Integrity: High
Availability: High

Exploit likelihood

0.62%Down 0.5 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2015-8814
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-352
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-8814
Updated: 2026-11-02

EUVDEUVD-2022-2572 No score

Record: EUVD-2022-2572
Updated: 2026-11-03

GitHub AdvisoriesGHSA-5f6p-4hxq-rjxm 8.8

Umbraco CMS vulnerable to CSRF

Record: GHSA-5f6p-4hxq-rjxm
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-352
Updated: 2026-11-02

OSVGHSA-5f6p-4hxq-rjxm 8.8

Umbraco CMS vulnerable to CSRF

Record: GHSA-5f6p-4hxq-rjxm
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-352
Updated: 2026-11-02

Affected products

umbraco

Affected packages

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

History

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

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

In short

CVE-2015-8814 is a high vulnerability (CVSS 8.8) in Umbraco, published March 3, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. Fixed in Umbraco.CMS 7.4.0.