F5 Nginx Ingress Controller vulnerabilities

CVE-2023-44487 [HIGH] CWE-400 CVE-2023-44487: The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancell The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

CVE-2026-42945 [HIGH] CWE-122 CVE-2026-42945: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vu NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthent

CVE-2026-42055 [HIGH] CWE-122 CVE-2026-42055: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_g NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger tha

CVE-2026-42530 [HIGH] CWE-416 CVE-2026-42530: NGINX Open Source has a vulnerability in the ngx_http_v3_module module. When NGINX Open Source is co NGINX Open Source has a vulnerability in the ngx_http_v3_module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This may cause a Use-after-Free in the NGINX worker process

CVE-2026-55723 [HIGH] CWE-76 CVE-2026-55723: When NGINX Ingress Controller is configured with Custom Resource Definitions (CRDs) or Ingress annot When NGINX Ingress Controller is configured with Custom Resource Definitions (CRDs) or Ingress annotations, an injection vulnerability exists in the configuration generator of NGINX Ingress Controller. Multiple user-controllable fields are written into the generated NGINX configuration without sanitization. An authenticated attacker with permission to

CVE-2026-42946 [HIGH] CWE-789 CVE-2026-42946: A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGI

CVE-2025-14727 [HIGH] CWE-22 CVE-2025-14727: A vulnerability exists in NGINX Ingress Controller's nginx.org/rewrite-target annotation validation. A vulnerability exists in NGINX Ingress Controller's nginx.org/rewrite-target annotation validation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2022-41741 [HIGH] CWE-787 CVE-2022-41741: NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its termination or potential other impact using a spec

CVE-2026-40460 [MEDIUM] CWE-290 CVE-2026-40460: When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may b When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-1642 [MEDIUM] CWE-349 CVE-2026-1642: A vulnerability exists in NGINX OSS and NGINX Plus when configured to proxy to upstream Transport La 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. Not

CVE-2026-52865 [MEDIUM] CWE-476 CVE-2026-52865: When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remo 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 loo

CVE-2021-23055 [MEDIUM] CWE-732 CVE-2021-23055: On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippe On version 2.x before 2.0.3 and 1.x before 1.12.3, the command line restriction that controls snippet use with NGINX Ingress Controller does not apply to Ingress objects. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2022-30535 [MEDIUM] CWE-20 CVE-2022-30535: In versions 2.x before 2.3.0 and all versions of 1.x, An attacker authorized to create or update ing In versions 2.x before 2.3.0 and all versions of 1.x, An attacker authorized to create or update ingress objects can obtain the secrets available to the NGINX Ingress Controller. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2022-41743 [HIGH] CWE-787 CVE-2022-41743: NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_hls_module NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_hls_module that might allow a local attacker to corrupt NGINX worker memory, resulting in its crash or potential other impact using a specially crafted audio or video file. The issue affects only NGINX Plus when the hls directive is used in the configuration file.

CVE-2022-41742 [HIGH] CWE-787 CVE-2022-41742: NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions NGINX Open Source before versions 1.23.2 and 1.22.1, NGINX Open Source Subscription before versions R2 P1 and R1 P1, and NGINX Plus before versions R27 P1 and R26 P1 have a vulnerability in the module ngx_http_mp4_module that might allow a local attacker to cause a worker process crash, or might result in worker process memory disclosure by using a spe

CVE-2026-48142 [MEDIUM] CWE-125 CVE-2026-48142: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When co NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their con

CVE-2026-40701 [MEDIUM] CWE-416 CVE-2026-40701: NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond

CVE-2024-10318 [MEDIUM] CWE-384 CVE-2024-10318: A session fixation issue was discovered in the NGINX OpenID Connect reference implementation, where A session fixation issue was discovered in the NGINX OpenID Connect reference implementation, where a nonce was not checked at login time. This flaw allows an attacker to fix a victim's session to an attacker-controlled account. As a result, although the attacker cannot log in as the victim, they can force the session to associate it with the attacke