CVE-2026-88804CWE-79cross-site-scripting

CVE-2026-88804

Critical · published September 28, 2026

CVSS v3.1
9.6
EPSS
1%
Percentile
48.0
In the wild
Unconfirmed
What it is

An unauthenticated update of public UI settings could be used by remote attackers to execute a stored cross-site scripting attack in the Rancher UI, in SUSE Rancher 2.15 before 2.15.2, 2.14 before 2.14.6, 2.13 before 2.13.10, 2.12 before 2.12.14 and 2.11 before 2.11.18.

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00599 · 48.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-28T20:17Z
References (1)
https://github.com/rancher/rancher/security/advisories/GHSA-992f-xh8r-jg2f · [email protected]
EPSS history
Timeline
  • 30 SEP 03:29Z
    EPSS moved — → 1%
    epss
  • 28 SEP 15:58Z
    Unauthenticated update of public UI settings leading to stored cross-site scripting in Rancher
    cvelistv5