PT-2026-113978 · F5 · Nginx Ingress Controller

CVE-2026-104939

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Published

2026-10-14

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Updated

2026-10-14

CVSS v3.1

7.5

High

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description NGINX Ingress Controller has a vulnerability when implementing an externalAuth policy for ingress. NGINX Ingress Controller may mishandle the HTTP response from an OAuth IdP and allow an attacker to acquire unauthenticated access to protected paths before the proper external authentication can happen.
Impact This vulnerability may allow remote attackers
unauthenticated
access to protected
paths. There is no control plane exposure; this is a data plane issue only.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Fix

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Weakness Enumeration

Related Identifiers

CVE-2026-104939

Affected Products

Nginx Ingress Controller