Vulnerability · Published Sep 28, 2026 · Assigned by suse
CVE-2026-88804Unauthenticated update of public UI settings leading to stored cross-site scripting in Rancher
Critical 9.6
In plain English
A critical-severity cross-site scripting in Rancher from SUSE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)1.0%top 35.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling2Nuclei, Public PoC
Official description
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.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H