CVE-2026-1642 – NGINX vulnerability

CVE ID : CVE-2026-1642

Published : Feb. 4, 2026, 3:02 p.m. | 16 minutes ago

Description : A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport Layer Security (TLS) servers. An attacker with a man-in-the-middle (MITM) position on the upstream server side—along with conditions beyond the attacker’s control—may be able to inject plain text data into the response from an upstream proxied server.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity: 8.2 | HIGH

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