https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 28 Sep 2026 16:04:31 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-67232 <p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress =&gt; true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set max_frame_size, so cowboy&#39;s default of infinity applies. cowlib&#39;s cow_ws:parse_payload/9 calls zlib:inflate/2 on the compressed payload with no output-size limit. An attacker can negotiate permessage-deflate during the WebSocket upgrade and send a frame containing a zlib bomb (e.g. 50 KB → 5 GB). Decompression occurs in the connection process before websocket_handle/2 ever sees the MQTT bytes. An unauthenticated attacker can crash a RabbitMQ node running the Web-MQTT plugin by sending a single highly-compressed WebSocket frame (a few KB on the wire) that inflates to gigabytes in memory. The cowboy WebSocket handler decompresses the entire frame before the MQTT CONNECT packet is processed, so no credentials are required. Preconditions include rabbitmq_web_mqtt plugin enabled (not default, but common for browser clients) Network reachability to port 15675/15676 No authentication required. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.</p> <p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress =&gt; true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set max_frame_size, so cowboy&#39;s default of infinity applies. cowlib&#39;s cow_ws:parse_payload/9 calls zlib:inflate/2 on the compressed payload with no output-size limit. An attacker can negotiate permessage-deflate during the WebSocket upgrade and send a frame containing a zlib bomb (e.g. 50 KB → 5 GB). Decompression occurs in the connection process before websocket_handle/2 ever sees the MQTT bytes. An unauthenticated attacker can crash a RabbitMQ node running the Web-MQTT plugin by sending a single highly-compressed WebSocket frame (a few KB on the wire) that inflates to gigabytes in memory. The cowboy WebSocket handler decompresses the entire frame before the MQTT CONNECT packet is processed, so no credentials are required. Preconditions include rabbitmq_web_mqtt plugin enabled (not default, but common for browser clients) Network reachability to port 15675/15676 No authentication required. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-67232 https://vulnerability.circl.lu/vuln/rhsa-2026:67552 <p>rabbitmq-server: RabbitMQ: Unsanitized vhost names allow for XSS in management UI rabbitmq: RabbitMQ: Authenticated user can bypass connection limits via stream protocol rabbitmq: RabbitMQ: Information disclosure of decrypted Shovel URIs in debug logs rabbitmq-server: RabbitMQ: Monitoring user can reset authentication attempt counters rabbitmq-server: RabbitMQ: Cross-Origin Resource Sharing (CORS) misconfiguration allows unauthorized actions rabbitmq-server: RabbitMQ: Denial of Service via atom table exhaustion in stream chunk_selector rabbitmq: RabbitMQ: Denial of Service via management API regular expression filter rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw rabbitmq: RabbitMQ: Information disclosure via cross-vhost authorization bypass RabbitMQ: RabbitMQ: Account takeover via stored Cross-Site Scripting in TLS peer-certificate DN rabbitmq-server: RabbitMQ: Denial of Service via AMQP 1.0 array32 parsing rabbitmq-server: RabbitMQ: Denial of Service via unbounded super-stream partition allocation rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation rabbitmq: RabbitMQ: Denial of Service via unbounded consistent-hash exchange weight rabbitmq-server: RabbitMQ: Denial of Service via JMS topic exchange atom exhaustion rabbitmq: RabbitMQ: Information disclosure of AMQP 1.0 shovel URI passwords rabbitmq: RabbitMQ: Administrator path traversal allows arbitrary file write rabbitmq: RabbitMQ: Denial of Service vi…</p> <p>rabbitmq-server: RabbitMQ: Unsanitized vhost names allow for XSS in management UI rabbitmq: RabbitMQ: Authenticated user can bypass connection limits via stream protocol rabbitmq: RabbitMQ: Information disclosure of decrypted Shovel URIs in debug logs rabbitmq-server: RabbitMQ: Monitoring user can reset authentication attempt counters rabbitmq-server: RabbitMQ: Cross-Origin Resource Sharing (CORS) misconfiguration allows unauthorized actions rabbitmq-server: RabbitMQ: Denial of Service via atom table exhaustion in stream chunk_selector rabbitmq: RabbitMQ: Denial of Service via management API regular expression filter rabbitmq-server: RabbitMQ: Monitoring user can disrupt message flow via authorization flaw rabbitmq: RabbitMQ: Information disclosure via cross-vhost authorization bypass RabbitMQ: RabbitMQ: Account takeover via stored Cross-Site Scripting in TLS peer-certificate DN rabbitmq-server: RabbitMQ: Denial of Service via AMQP 1.0 array32 parsing rabbitmq-server: RabbitMQ: Denial of Service via unbounded super-stream partition allocation rabbitmq-server: RabbitMQ: Privilege escalation via super-stream HTTP creation rabbitmq: RabbitMQ: Denial of Service via unbounded consistent-hash exchange weight rabbitmq-server: RabbitMQ: Denial of Service via JMS topic exchange atom exhaustion rabbitmq: RabbitMQ: Information disclosure of AMQP 1.0 shovel URI passwords rabbitmq: RabbitMQ: Administrator path traversal allows arbitrary file write rabbitmq: RabbitMQ: Denial of Service vi…</p> https://vulnerability.circl.lu/vuln/rhsa-2026:67552 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-67232 <p><strong>Affected:</strong> Ubuntu:Pro:16.04:LTS: rabbitmq-server, Ubuntu:18.04:LTS: rabbitmq-server, Ubuntu:20.04:LTS: rabbitmq-server, Ubuntu:22.04:LTS: rabbitmq-server, Ubuntu:24.04:LTS: rabbitmq-server, Ubuntu:26.04:LTS: rabbitmq-server</p> <p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress =&gt; true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set max_frame_size, so cowboy&#39;s default of infinity applies. cowlib&#39;s cow_ws:parse_payload/9 calls zlib:inflate/2 on the compressed payload with no output-size limit. An attacker can negotiate permessage-deflate during the WebSocket upgrade and send a frame containing a zlib bomb (e.g. 50 KB → 5 GB). Decompression occurs in the connection process before websocket_handle/2 ever sees the MQTT bytes. An unauthenticated attacker can crash a RabbitMQ node running the Web-MQTT plugin by sending a single highly-compressed WebSocket frame (a few KB on the wire) that inflates to gigabytes in memory. The cowboy WebSocket handler decompresses the entire frame before the MQTT CONNECT packet is processed, so no credentials are required. Preconditions include rabbitmq_web_mqtt plugin enabled (not default, but common for browser clients) Network reachability to port 15675/15676 No authentication required. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.</p> <p><strong>Affected:</strong> Ubuntu:Pro:16.04:LTS: rabbitmq-server, Ubuntu:18.04:LTS: rabbitmq-server, Ubuntu:20.04:LTS: rabbitmq-server, Ubuntu:22.04:LTS: rabbitmq-server, Ubuntu:24.04:LTS: rabbitmq-server, Ubuntu:26.04:LTS: rabbitmq-server</p> <p>RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress =&gt; true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set max_frame_size, so cowboy&#39;s default of infinity applies. cowlib&#39;s cow_ws:parse_payload/9 calls zlib:inflate/2 on the compressed payload with no output-size limit. An attacker can negotiate permessage-deflate during the WebSocket upgrade and send a frame containing a zlib bomb (e.g. 50 KB → 5 GB). Decompression occurs in the connection process before websocket_handle/2 ever sees the MQTT bytes. An unauthenticated attacker can crash a RabbitMQ node running the Web-MQTT plugin by sending a single highly-compressed WebSocket frame (a few KB on the wire) that inflates to gigabytes in memory. The cowboy WebSocket handler decompresses the entire frame before the MQTT CONNECT packet is processed, so no credentials are required. Preconditions include rabbitmq_web_mqtt plugin enabled (not default, but common for browser clients) Network reachability to port 15675/15676 No authentication required. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-67232