CVE-2021-25742
Ingress-nginx custom snippets allows retrieval of ingress-nginx serviceaccount token and secrets across all namespaces
HIGH
7.1
CVSS Score
Published: October 29, 2021 at 04:05 AM UTC
Updated: June 17, 2026 at 03:42 AM UTC
2 products affected across 2 vendorsIngress nginxTrident
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Severity
HIGH7.1
Exploit prediction
EPSS 2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 0.49.1, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in next of 0.49.0 (unknown)
Vendor states this is fixed in next of 1.0.0 (unknown)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCExploitIssue TrackingMitigationThird Party Advisory
Source: [email protected]
https://github.com/kubernetes/ingress-nginx/issues/7837x_refsource_MISCMailing ListMitigationThird Party Advisory
Source: [email protected]
https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQYx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20211203-0001/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo
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