Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-52865— NGINX Ingress Controller vulnerability

Quick assessment

Affected
F5 NGINX Ingress Controller
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

F5 nginx ingress controller是美国F5公司开源的一个入口流量控制器。 F5 NGINX Ingress Controller存在异常处理不当漏洞，该漏洞源于处理Ingress或TransportServer资源时可能终止进程，可能导致远程认证攻击者造成拒绝服务。以下版本受到影响：5.0.0至5.5.2之前版本、2026-lts-r1至2026-lts-r3之前版本。

CVSS 6.5 · Medium EPSS 0.50% · P42

Affected Version Matrix 2

VendorProduct Version RangeStatus
F5 NGINX Ingress Controller 5.0.0< 5.5.2 affected
2026-lts-r1< 2026-lts-r3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-52865

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
NGINX Ingress Controller vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
F5 NGINX Ingress Controller 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 nginx ingress controller是美国F5公司开源的一个入口流量控制器。 F5 NGINX Ingress Controller存在异常处理不当漏洞，该漏洞源于处理Ingress或TransportServer资源时可能终止进程，可能导致远程认证攻击者造成拒绝服务。以下版本受到影响：5.0.0至5.5.2之前版本、2026-lts-r1至2026-lts-r3之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
F5 NGINX Ingress Controller 5.0.0 ~ 5.5.2 -

II. Public POCs for CVE-2026-52865

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-52865

请登录查看更多情报信息。

Other References for CVE-2026-52865 (1)

Same Patch Batch · F5 · 2026-07-15 · 8 CVEs total

CVE-2026-55723 8.3 HIGH NGINX Ingress Controller vulnerability
CVE-2026-60005 8.2 HIGH NGINX ngx_http_slice_module vulnerability
CVE-2026-42533 8.1 HIGH NGINX Map directive and Regex matching vulnerability
CVE-2026-59762 7.5 HIGH BIG-IP HTTP/2 vulnerability
CVE-2026-56434 6.5 MEDIUM NGINX ngx_http_ssi_module vulnerability
CVE-2026-60062 6.4 MEDIUM NGINX Agent Vulnerability
CVE-2026-60065 3.7 LOW NGINX Plus ngx_stream_mqtt_filter_module vulnerability

IV. Related Vulnerabilities

Same product: NGINX Ingress Controller
Same vendor: F5
Same weakness: CWE-476

V. Comments for CVE-2026-52865

No comments yet

Leave a comment