---
id: CVE-2020-13597
aliases:
  - GHSA-pf59-j7c2-rh6x
title: >-
  Exposure of Sensitive Information to an Unauthorized Actor and Insertion of
  Sensitive Information Into Sent Data in Calico
summary: >-
  Exposure of Sensitive Information to an Unauthorized Actor and Insertion of
  Sensitive Information Into Sent Data in Calico
severity: medium
cvss: 6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L'
vendor: projectcalico
product: github.com/projectcalico/calico
ecosystem: go
affected:
  - 'github.com/projectcalico/calico >= 3.14.0, < 3.14.1'
  - 'github.com/projectcalico/calico >= 3.13.0, < 3.13.4'
  - 'github.com/projectcalico/calico >= 3.12.0, < 3.12.2'
  - 'github.com/projectcalico/calico >= 3.11.0, < 3.11.3'
  - 'github.com/projectcalico/calico >= 3.10.0, < 3.10.4'
  - 'github.com/projectcalico/calico >= 3.9.0, < 3.9.6'
  - github.com/projectcalico/calico < 3.8.9
patched:
  - github.com/projectcalico/calico 3.14.1
  - github.com/projectcalico/calico 3.13.4
  - github.com/projectcalico/calico 3.12.2
  - github.com/projectcalico/calico 3.11.3
  - github.com/projectcalico/calico 3.10.4
  - github.com/projectcalico/calico 3.9.6
  - github.com/projectcalico/calico 3.8.9
published: '2022-02-15'
updated: '2026-08-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-pf59-j7c2-rh6x'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-13597'
  - url: 'https://github.com/kubernetes/kubernetes/issues/91507'
  - url: 'https://github.com/containernetworking/plugins/pull/484'
  - url: >-
      https://github.com/containernetworking/plugins/commit/ad10b6fa91aacd720f1f9ab94341a97a82a24965
  - url: 'https://github.com/projectcalico/calico'
  - url: >-
      https://groups.google.com/forum/#!topic/kubernetes-security-announce/BMb_6ICCfp8
  - url: 'https://www.projectcalico.org/security-bulletins'
tags:
  - osv
  - go
epss: 0.00902
epssPercentile: 0.58046
ingestedAt: '2026-08-07T19:14:17.437Z'
---

## Overview

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

## Affected packages

- `github.com/projectcalico/calico >= 3.14.0, < 3.14.1`
- `github.com/projectcalico/calico >= 3.13.0, < 3.13.4`
- `github.com/projectcalico/calico >= 3.12.0, < 3.12.2`
- `github.com/projectcalico/calico >= 3.11.0, < 3.11.3`
- `github.com/projectcalico/calico >= 3.10.0, < 3.10.4`
- `github.com/projectcalico/calico >= 3.9.0, < 3.9.6`
- `github.com/projectcalico/calico < 3.8.9`

## Remediation

Upgrade to a patched release:

- `github.com/projectcalico/calico 3.14.1`
- `github.com/projectcalico/calico 3.13.4`
- `github.com/projectcalico/calico 3.12.2`
- `github.com/projectcalico/calico 3.11.3`
- `github.com/projectcalico/calico 3.10.4`
- `github.com/projectcalico/calico 3.9.6`
- `github.com/projectcalico/calico 3.8.9`