Acceptance of Extraneous Untrusted Data With Trusted Data Affecting nginx package, versions [1.3.0,1.28.2)[1.29.0,1.29.5)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-NGINX-15204454
- published4 Feb 2026
- disclosed4 Feb 2026
- creditUnknown
Introduced: 4 Feb 2026
CVE-2026-1642 (opens in a new tab)How to fix?
Upgrade nginx to version 1.28.2, 1.29.5 or higher.
Overview
Affected versions of this package are vulnerable to Acceptance of Extraneous Untrusted Data With Trusted Data via the HTTP/2 modules (grpc and proxy_v2). An attacker can inject unauthorized plain text data into responses from an upstream server by performing a man-in-the-middle attack on the upstream server side, under certain conditions beyond the attacker's control.