CVE-2026-84793CWE-79cross-site-scripting

CVE-2026-84793

Medium · published September 2, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
15.7
In the wild
Unconfirmed
What it is

Craft CMS versions from 5.0.0-RC1 before 5.10.11 contain a stored cross-site scripting vulnerability in the site name field that fails to sanitize input. Administrators can inject arbitrary JavaScript payloads in the site name that execute when other users view the control panel settings pages.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
4.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00251 · 15.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-02T16:17Z
References (3)
https://github.com/craftcms/cms/security/advisories/GHSA-5fjj-496j-2qqf · [email protected]https://www.vulncheck.com/advisories/craft-cms-5.0.0-rc1-before-5.10.11-stored-xss-via-site-name · [email protected]https://github.com/craftcms/cms/security/advisories/GHSA-5fjj-496j-2qqf · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 11:11Z
    Craft CMS 5.0.0-RC1 before 5.10.11 Stored XSS via site name
    cvelistv5