CVE-2026-28753 (GCVE-0-2026-28753)
Vulnerability from cvelistv5
Published
2026-03-24 14:13
Modified
2026-03-24 15:24
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
6.3 (Medium) - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Summary
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
Impacted products
Vendor Product Version
F5 NGINX Open Source Version: 1.29.0   ≤
Version: 0.6.27   ≤
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   F5 NGINX Plus Version: R36   < R36 P3
Version: R35   < R35 P2
Version: R34   < *
Version: R33   < *
Version: R32   < R32 P5
 Create a notification for this product.
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