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CVE-2026-1642

NGINX vulnerability

Published: Feb 4, 2026Updated: Feb 13, 2026 Sources: CVE List NVD BDUCWE-349
5.9MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 73.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-349CWE-345

Affected Products

NGINX Inc.
commercial·USaka nginx plus, nginx, njs
NGINX Plus
Networking Infrastructure
NGINX Open Source
Networking Infrastructure
NGINX Ingress Controller
Networking Infrastructure
NGINX Gateway Fabric
Networking Infrastructure
NGINX Instance Manager
Networking Infrastructure
F5
commercial·US
NGINX Open SourceOn-premWeb App
Networking Infrastructure / load-balancer-proxy
NGINX PlusOn-premWeb App
Networking Infrastructure / load-balancer-proxy
nginx gateway fabricOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
nginx ingress controllerOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
nginx instance managerOn-prem
Networking Infrastructure / load-balancer-proxy
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
АО «СберТех»
commercial·RUaka сбертех, ao sbertech
Platform V SberLinux OS ServerOn-premOS
Operating Systems / linux-distro
ООО "Веб-Сервер"
commercial·RUaka angie pro, angie adc, angie
AngieOn-prem
Networking Infrastructure / load-balancer-proxy
and 3 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2026-1642
nvd.nist.gov
http://www.openwall.com/lists/oss-security/2026/02/05/1
openwall.com
https://my.f5.com/manage/s/article/K000159824
my.f5.com
and 4 more references View all →

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