High · CVSS 7.6CVE-2026-88809

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

Answer in brief

CVE-2026-88809 records a High severity (CVSS 7.6) vulnerability in Rancher meta proxy allowlist bypass leading to server-side request forgery. The current sources do not mark it as known exploited. The current feed maps SUSE/Rancher (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.6
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SUSE/Rancher (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
SUSE/Ranchergeneric	>=2.15.0 <2.15.3 \|\| >=2.14.0 <2.14.7 \|\| >=2.13.0 <2.13.11 \|\| >=2.12.0 <2.12.15 \|\| >=2.11.0 <2.11.19	2.15.3, 2.14.7, 2.13.11, 2.12.15, 2.11.19

Recommended response

Check inventory. Check lockfiles and deployed manifests for SUSE/Rancher.
Review the reported fix. Update SUSE/Rancher to 2.15.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 2, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.