CVE-2018-17256

4.8 mediumEPSS 0.7%

Medium (4.8) in umbraco umbraco cms. EPSS 0.7% chance of exploitation in the next 30 days.

Persistent cross-site scripting (XSS) vulnerability in Umbraco CMS 7.12.3 allows authenticated users to inject arbitrary web script via the Header Name of a content (Blog, Content Page, etc.). The vulnerability is exploited when updating or removing public access of a content.

Severity

CVSS 3.0

4.8 medium

CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2018-11-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

umbraco:umbraco_cms

References

https://www.cspcert.ph/advisories/2018/CVE-2018-17256.html
https://www.cspcert.ph/advisories/2018/CVE-2018-17256.html

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