CVE-2026-52865NGINX Ingress Controller vulnerability
Updated under an hour ago ()
Does this affect you?
It affects F5 NGINX Ingress Controller. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remote attacker with permission to create or modify Ingress or TransportServer resources can cause the NGINX Ingress Controller process to terminate. Impact: The NGINX Ingress Controller control plane process terminates and enters a persistent crash loop while the malformed Ingress or TransportServer resource remains in the cluster. This vulnerability allows a remote, authenticated attacker with at least Ingress or TransportServer resource write access to cause a denial-of-service (DoS) on the NGINX Ingress Controller system. There is no data plane exposure; this is a control plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- f5
- NVD analysis
- Analyzed
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
F5 NGINX Ingress Controller f5:nginx_ingress_controller (from the name) | from 5.0.0 before 5.5.2; from 2026-lts-r1 before 2026-lts-r3 | CNA record |
f5 nginx_ingress_controller f5:nginx_ingress_controller | from 3.5.0 through 3.7.2; from 4.0.0 through 4.0.1; from 5.0.0 before 5.5.2 | NVD |
References
- https://my.f5.com/manage/s/article/K000161834vendor-advisory, patch, mitigation
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.