CVE-2018-17256: 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…

PriorityP418medium4.8CVSS 3.0

AVNACLPRHUIRSCCLILAN

EPSS

0.65%

46.5th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
cybersecurity_philippines_cert	umbracocms	—	—
umbraco	umbraco	0 – 7.12.3	—
umbraco	umbraco_cms	—	—

CVSS provenance

nvdv3.04.8MEDIUMCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

nvdv2.03.5LOWAV:N/AC:M/Au:S/C:N/I:P/A:N

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.