Threat Intelligence Database

CVE-2026-97629 is a vulnerability in F5 NGINX Plus and NGINX Open Source related to the use of uninitialized resources when configured with ssl_session_cache without explicit ssl_session_ticket_key directives. This flaw allows a remote unauthenticated attacker to forge client SSL sessions unpredictably, potentially bypassing client certificate verification. The issue affects the data plane only and does not expose the control plane. The vulnerability has a medium severity with a CVSS score of 6.5.

CVE-2026-90439 is a heap-based buffer overflow vulnerability in the ngx_http_v3_module of NGINX Plus and NGINX Open Source when using HTTP/3 with OpenSSL versions up to 3.5.0 under certain configurations. This flaw can cause the NGINX worker process to restart or experience limited data corruption. The issue affects the data plane only and does not expose the control plane. The vulnerability has a medium severity rating with a CVSS score of 6.5.

When NGINX Plus is configured to use the Message Queuing Telemetry Transport (MQTT) filter module (ngx_stream_mqtt_filter_module), unauthenticated attackers can send requests with conditions beyond the attacker's control to cause a heap buffer over-read in the NGINX worker process, leading to a restart. Impact: This vulnerability may allow remote unauthenticated attackers to have limited control to restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.