CVE-2026-50107: F5 NGINX Gateway Fabric · Injection
Affects F5 NGINX Gateway FabricSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 2.6.4 soon.
Data as of 30 Oct 2026, 20:25 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 42% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.6.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 17 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade F5 NGINX Gateway Fabric to 2.6.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| F5NGINX Gateway Fabric | Affected
| Fixed in
|
AI-suggested
Avoid deploying affected versions in untrusted environments until a fix is available.
Description
CVE-2026-50107 is an injection vulnerability in the NGINX configuration generator component of F5's NGINX Gateway Fabric version 2.3.0. It occurs when user-supplied string values from the NginxProxy Custom Resource Definition (CRD) access log format setting are incorporated into NGINX configuration templates without proper sanitization or escaping. An authenticated user with permission to create or modify these CRDs can inject arbitrary NGINX configuration directives. This vulnerability affects the control plane only and does not expose the data plane directly.