CVE-2021-25748
HIGHingress-nginx < 1.2.1 - Authenticated Credential Exposure via Ingress Path Sanitization Bypass
Title source: llmDescription
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of 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.
References (2)
Core 2
Core References
Issue Tracking, Mitigation, Vendor Advisory
https://github.com/kubernetes/ingress-nginx/issues/8686
Mailing List, Mitigation, Vendor Advisory
https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8
Scores
CVSS v3
7.6
EPSS
0.0069
EPSS Percentile
48.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (2)
k8s.io/ingress-nginx
0 - 1.2.1Go
kubernetes/ingress-nginx
< 1.2.1
Published
May 24, 2023
Tracked Since
Feb 18, 2026