Source: nginx
Version: 1.28.1-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerability was published for nginx.

CVE-2026-1642[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-1642
    https://www.cve.org/CVERecord?id=CVE-2026-1642
[1] https://www.openwall.com/lists/oss-security/2026/02/05/1
[2] https://my.f5.com/manage/s/article/K000159824
[3] 
https://github.com/nginx/nginx/commit/784fa05025cb8cd0c770f99bc79d2794b9f85b6e

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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