Rancher

Rancher Manager: Missing Validation on .username Field Causes Denial of Access
CVE-2024-58260 7.6 - High - October 02, 2025

A vulnerability has been identified within Rancher Manager where a missing server-side validation on the `.username` field in Rancher can allow users with update permissions on other User resources to cause denial of access for targeted accounts.

AuthZ

Rancher Manager CLI SAML Phishing Vulnerability
CVE-2024-58267 8 - High - October 02, 2025

A vulnerability has been identified within Rancher Manager whereby the SAML authentication from the Rancher CLI tool is vulnerable to phishing attacks. The custom authentication protocol for SAML-based providers can be abused to steal Ranchers authentication tokens.

Insufficient Verification of Data Authenticity

Rancher 2.7-2.9 PrivEsc via node driver chroot escape CVE-2024-22036
CVE-2024-22036 9.1 - Critical - April 16, 2025

A vulnerability has been identified within Rancher where a cluster or node driver can be used to escape the chroot jail and gain root access to the Rancher container itself. In production environments, further privilege escalation is possible based on living off the land within the Rancher container itself. For the test and development environments, based on a privileged Docker container, it is possible to escape the Docker container and gain execution access on the host system. This issue affects rancher: from 2.7.0 before 2.7.16, from 2.8.0 before 2.8.9, from 2.9.0 before 2.9.3.

Improper Privilege Management

Rancher URL DNS Spoofing Enables MITM Attack
CVE-2024-22030 - October 16, 2024

A vulnerability has been identified within Rancher that can be exploited in narrow circumstances through a man-in-the-middle (MITM) attack. An attacker would need to have control of an expired domain or execute a DNS spoofing/hijacking attack against the domain to exploit this vulnerability. The targeted domain is the one used as the Rancher URL.

Improper Certificate Validation

Rancher Audit Log Sensitive Data Leak
CVE-2023-22649 6.5 - Medium - October 16, 2024

A vulnerability has been identified which may lead to sensitive data being leaked into Rancher's audit logs. [Rancher Audit Logging](https://ranchermanager.docs.rancher.com/how-to-guides/advanced-user-guides/enable-api-audit-log) is an opt-in feature, only deployments that have it enabled and have [AUDIT_LEVEL](https://ranchermanager.docs.rancher.com/how-to-guides/advanced-user-guides/enable-api-audit-log#audit-log-levels) set to `1 or above` are impacted by this issue.

Insertion of Sensitive Information into Log File

CVE-2020-10676: Unauth Namespace Relocation in Rancher 2.x <2.6.13/2.7.4
CVE-2020-10676 8.8 - High - December 12, 2023

In Rancher 2.x before 2.6.13 and 2.7.x before 2.7.4, an incorrectly applied authorization check allows users who have certain access to a namespace to move that namespace to a different project.

AuthZ

a Improper Access Control vulnerability in SUSE Rancher allows users to keep privileges that should have been revoked
CVE-2021-36775 8.8 - High - April 04, 2022

a Improper Access Control vulnerability in SUSE Rancher allows users to keep privileges that should have been revoked. This issue affects: SUSE Rancher Rancher versions prior to 2.4.18; Rancher versions prior to 2.5.12; Rancher versions prior to 2.6.3.

A Improper Access Control vulnerability in SUSE Rancher allows remote attackers impersonate arbitrary users
CVE-2021-36776 8.8 - High - April 04, 2022

A Improper Access Control vulnerability in SUSE Rancher allows remote attackers impersonate arbitrary users. This issue affects: SUSE Rancher Rancher versions prior to 2.5.10.

A Incorrect Permission Assignment for Critical Resource vulnerability in Rancher
CVE-2021-25318 8.8 - High - July 15, 2021

A Incorrect Permission Assignment for Critical Resource vulnerability in Rancher allows users in the cluster to modify resources they should not have access to. This issue affects: Rancher versions prior to 2.5.9 ; Rancher versions prior to 2.4.16.

Incorrect Permission Assignment for Critical Resource

A Improper Access Control vulnerability in Rancher
CVE-2021-25320 9.9 - Critical - July 15, 2021

A Improper Access Control vulnerability in Rancher, allows users in the cluster to make request to cloud providers by creating requests with the cloud-credential ID. Rancher in this case would attach the requested credentials without further checks This issue affects: Rancher versions prior to 2.5.9; Rancher versions prior to 2.4.16.

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher
CVE-2021-31999 8.8 - High - July 15, 2021

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.

Reliance on Untrusted Inputs in a Security Decision

A Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rancher
CVE-2021-25313 6.1 - Medium - March 05, 2021

A Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rancher allows remote attackers to execute JavaScript via malicious links. This issue affects: SUSE Rancher Rancher versions prior to 2.5.6.

XSS

Rancher 2 through 2.2.4 is vulnerable to a Cross-Site Websocket Hijacking attack
CVE-2019-13209 - September 04, 2019

Rancher 2 through 2.2.4 is vulnerable to a Cross-Site Websocket Hijacking attack that allows an exploiter to gain access to clusters managed by Rancher. The attack requires a victim to be logged into a Rancher server, and then to access a third-party site hosted by the exploiter. Once that is accomplished, the exploiter is able to execute commands against the cluster's Kubernetes API with the permissions and identity of the victim.

An issue was discovered
CVE-2019-11202 9.8 - Critical - July 30, 2019

An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, and v2.2.0 through 2.2.1. When Rancher starts for the first time, it creates a default admin user with a well-known password. After initial setup, the Rancher administrator may choose to delete this default admin user. If Rancher is restarted, the default admin user will be recreated with the well-known default password. An attacker could exploit this by logging in with the default admin credentials. This can be mitigated by deactivating the default admin user rather than completing deleting them.

authentification

A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter
CVE-2019-11881 4.7 - Medium - June 10, 2019

A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. There's no other limitation of the message, allowing malicious users to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.

In Rancher 2 through 2.2.3, Project owners
CVE-2019-12303 - June 06, 2019

In Rancher 2 through 2.2.3, Project owners can inject additional fluentd configuration to read files or execute arbitrary commands inside the fluentd container.

In Rancher 1 and 2 through 2.2.3, unprivileged users (if
CVE-2019-12274 - June 06, 2019

In Rancher 1 and 2 through 2.2.3, unprivileged users (if allowed to deploy nodes) can gain admin access to the Rancher management plane because node driver options intentionally allow posting certain data to the cloud. The problem is that a user could choose to post a sensitive file such as /root/.kube/config or /var/lib/rancher/management-state/cred/kubeconfig-system.yaml.

In Rancher 2.0.0 through 2.1.5, project members have continued access to create, update, read, and delete namespaces in a project after they have been removed
CVE-2019-6287 8.1 - High - April 10, 2019

In Rancher 2.0.0 through 2.1.5, project members have continued access to create, update, read, and delete namespaces in a project after they have been removed from it.

Improper Privilege Management

An issue was discovered in Rancher 2 through 2.1.5
CVE-2018-20321 - April 10, 2019

An issue was discovered in Rancher 2 through 2.1.5. Any project member with access to the default namespace can mount the netes-default service account in a pod, and then use that pod to execute administrative privileged commands against the k8s cluster. This could be mitigated by isolating the default namespace in a separate project, where only cluster admins can be given permissions to access. As of 2018-12-20, this bug affected ALL clusters created or imported by Rancher.

Rancher Labs rancher server 1.2.0+ is vulnerable to authenticated users disabling access control via an API call
CVE-2017-7297 - March 29, 2017

Rancher Labs rancher server 1.2.0+ is vulnerable to authenticated users disabling access control via an API call. This is fixed in versions rancher/server:v1.2.4, rancher/server:v1.3.5, rancher/server:v1.4.3, and rancher/server:v1.5.3.