6.3

CVE-2026-28753

NGINX ngx_mail_proxy_module vulnerability

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
F5 ≫ Nginx Plus Versionr32 Updatep1
F5 ≫ Nginx Plus Versionr32 Updatep2
F5 ≫ Nginx Plus Versionr32 Updatep3
F5 ≫ Nginx Plus Versionr32 Updatep4
F5 ≫ Nginx Plus Versionr33
F5 ≫ Nginx Plus Versionr33 Updatep1
F5 ≫ Nginx Plus Versionr33 Updatep2
F5 ≫ Nginx Plus Versionr33 Updatep3
F5 ≫ Nginx Plus Versionr34
F5 ≫ Nginx Plus Versionr34 Updatep1
F5 ≫ Nginx Plus Versionr34 Updatep2
F5 ≫ Nginx Plus Versionr35
F5 ≫ Nginx Plus Versionr35 Updatep1
F5 ≫ Nginx Plus Versionr36
F5 ≫ Nginx Plus Versionr36 Updatep1
F5 ≫ Nginx Plus Versionr36 Updatep2
F5 ≫ Nginx Open Source Version >= 0.6.27 <= 0.9.7
F5 ≫ Nginx Open Source Version >= 1.0.0 < 1.28.3
F5 ≫ Nginx Open Source Version >= 1.29.0 < 1.29.7
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.068
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f5sirt@f5.com 3.7 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
f5sirt@f5.com 6.3 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.