CVE-2021-25746

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
Kubernetes	Kubernetes ingress-nginx	>= unspecified, < 1.2.0

References

https://github.com/kubernetes/ingress-nginx/issues/8503Issue Tracking, Mitigation, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQIssue Tracking, Mitigation, Third Party Advisory
https://security.netapp.com/advisory/ntap-20220609-0006/Third Party Advisory
https://github.com/kubernetes/ingress-nginx/issues/8503Issue Tracking, Mitigation, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQIssue Tracking, Mitigation, Third Party Advisory
https://security.netapp.com/advisory/ntap-20220609-0006/Third Party Advisory

Timeline

Published: May 6, 2022
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-257486.5A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypas CVE-2021-257497.8Windows workloads can run as ContainerAdministrator even when those workloads set the runAsNonRoot option to true.CVE-2021-257552.5In JetBrains Code With Me before 2020.3, an attacker on the local network, knowing a session ID, could get access to the encrypted traffic.CVE-2021-257565.3In JetBrains IntelliJ IDEA before 2020.2, HTTP links were used for several remote repositories instead of HTTPS.CVE-2021-257576.1In JetBrains Hub before 2020.1.12629, an open redirect was possible.CVE-2021-257587.8In JetBrains IntelliJ IDEA before 2020.3, potentially insecure deserialization of the workspace model could lead to local code execution.CVE-2021-257596.5In JetBrains Hub before 2020.1.12629, an authenticated user can delete 2FA settings of any other user.CVE-2021-257605.3In JetBrains Hub before 2020.1.12669, information disclosure via the public API was possible.CVE-2021-257615.3In JetBrains Ktor before 1.5.0, a birthday attack on SessionStorage key was possible.CVE-2021-257625.3In JetBrains Ktor before 1.4.3, HTTP Request Smuggling was possible.CVE-2021-257635.3In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.CVE-2021-257645.3In JetBrains PhpStorm before 2020.3, source code could be added to debug logs.