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.

INFO

Published Date :

2026-02-04T15:02:06.154Z

Last Modified :

2026-02-05T05:25:39.303Z

Source :

f5
AFFECTED PRODUCTS

The following products are affected by CVE-2026-1642 vulnerability.

Vendors Products
F5
  • Nginx Gateway Fabric
  • Nginx Ingress Controller
  • Nginx Instance Manager
  • Nginx Open Source
  • Nginx Plus
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1642.

URL Resource
http://www.openwall.com/lists/oss-security/2026/02/05/1 cve-icon
https://my.f5.com/manage/s/article/K000159824 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-1642 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-1642 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact