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CVE CVE-2026-28753

CVE-2026-28753

nginx

Severity: LOW
CVSS: 3.7CVSS
Published: 2026-03-24
Last modified: 2026-03-26
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE: CWE-93

Description

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.

References

https://my.f5.com/manage/s/article/K000160367

Summary

Description

References