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ALPINE-CVE-2026-28753

ALPINE-CVE-2026-28753

This page contains facts from public vulnerability sources. Check the original advisory before updating.

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_mail_smtp_module module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 6.3 · Medium · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • nginx Alpine:v3.22

    Affected ranges
    • ECOSYSTEM: < 1.28.3-r0

    Update to 1.28.3-r0

  • nginx Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: < 1.28.3-r0

    Update to 1.28.3-r0

  • nginx Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: < 1.28.3-r0

    Update to 1.28.3-r0

Original sources

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