Vulnerability · Published Nov 2, 2026 · Assigned by suse

CVE-2026-88809Rancher meta proxy allowlist bypass leading to server-side request forgery

High 7.6

In plain English

A high-severity server-side request forgery 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 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.3%top 74.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A security vulnerability exists in the SUSE Rancher Manager meta proxy endpoint (/meta/proxy). This endpoint is intended to forward requests only to destinations that appear on a configured allowlist. The allowlist decision was evaluated in a place where it could not stop a request from being forwarded, so a rejected destination was logged but the request was still handed to the proxy's transport. This affects SUSE Rancher 2.15.0 up to 2.15.3, 2.14.0 up to 2.14.7, 2.13.0 up to 2.13.11, 2.12.0 up to 2.12.15, 2.11.0 up to 2.11.19 and potentially older EOL versions.

Affected products (as reported)

Vendor	Product	Versions
SUSE	Rancher	2.15.0 – before 2.15.32.14.0 – before 2.14.72.13.0 – before 2.13.112.12.0 – before 2.12.152.11.0 – before 2.11.19

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

References

https://github.com/rancher/rancher/security/advisories/GHSA-f9gf-wh3x-jx3v vendor-advisory