CVE-2021-25742

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 the custom snippets feature to obtain 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, <= 0.49.0; >= unspecified, <= 1.0.0

References

https://github.com/kubernetes/ingress-nginx/issues/7837Exploit, Issue Tracking, Mitigation, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQYMailing List, Mitigation, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0001/Third Party Advisory
https://github.com/kubernetes/ingress-nginx/issues/7837Exploit, Issue Tracking, Mitigation, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQYMailing List, Mitigation, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0001/Third Party Advisory

Timeline

Published: Oct 29, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

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