CVE-2026-88809: high-severity vulnerability in SUSE Rancher
Rancher meta proxy allowlist bypass leading to server-side request forgery
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.6epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
Affected products
SUSE · RancherRelated CVEs — SUSE Rancher
In the same product, most dangerous first.
CVE-2021-36782CRITICALRancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io objectEPSS 4.2%CVE-2022-31249HIGH[RANCHER] OS command injection in Rancher and FleetEPSS 3.8%CVE-2022-43755HIGHRancher: Non-random authentication tokenEPSS 1.7%CVE-2021-25313HIGHRancher: XSS on /v3/cluster/EPSS 1.5%CVE-2026-44939CRITICALCommand injection through unsanitized YAML parameter in RancherEPSS 1.3%CVE-2021-36776HIGHSteve API proxy impersonationEPSS 1.1%