{"answers":{"affected":"2 open source packages ship an affected version, including com.rabbitmq:amqp-client.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63335 exists.","fix":"Upgrade com.rabbitmq:amqp-client to 5.31.0 or later.","what":"CVE-2026-63335 is a medium-severity denial of service vulnerability in rabbitmq-java-client, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-63335 and fix it if it is affected.\n\nWhat it is: CVE-2026-63335 is a medium-severity denial of service vulnerability in rabbitmq-java-client, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63335 exists.\n\nAffected packages and fixed versions:\n- com.rabbitmq:amqp-client (Maven): affected all versions; fixed in 5.31.0\n- com.rabbitmq:amqp-client (Maven): affected all versions; fixed in 5.31.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-63335/ (Markdown: https://insights.sbomify.com/CVE-2026-63335/index.md)","id":"CVE-2026-63335","markdown":"https://insights.sbomify.com/CVE-2026-63335/index.md","name":"CVE-2026-63335","record":{"aliases":["CLEANSTART-2026-ZR37336","DEBIAN-CVE-2026-63335","ECHO-3ae4-9a50-4ad6","GHSA-qx7j-jv8m-fppr","MINI-2949-7x2v-jc37","MINI-38qp-m9pg-crc9","MINI-3m93-pv8p-7g3x","MINI-622h-r87v-m53r","MINI-69cf-x9xm-x638","MINI-72jj-4hpf-gpff","MINI-9g9f-87x9-xgm5","MINI-cr8h-j27w-98r4","MINI-crcx-ffgm-9hc6","MINI-h43x-2xjm-f263","MINI-j289-5mp7-4xqx","MINI-j86m-hvpx-hvw6","MINI-jmx5-722w-cgvv","MINI-m4r3-7788-6pqq","MINI-wg7h-6wxw-7ccj","UBUNTU-CVE-2026-63335"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"RabbitMQ Java client","requires_auth":"low_privilege","summary":"A malicious broker can cause a denial of service in RabbitMQ Java client applications by sending malformed AMQP frames that trigger an unhandled exception.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.31.0, inbound AMQP command assembly in src/main/java/com/rabbitmq/client/impl/CommandAssembler.java processes a content-bearing method and header whose remainingBodyBytes value is smaller than a following AMQP.FRAME_BODY payload. CommandAssembler.consumeBodyFrame subtracts the peer-controlled payload length before validating that it fits, drives remainingBodyBytes negative, and throws a raw UnsupportedOperationException instead of MalformedFrameException. A malicious or compromised broker peer can send this malformed sequence on an open nonzero channel to terminate frame processing and close the client connection, causing denial of service for work using that connection. This issue is fixed in version 5.31.0.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"RabbitMQ Java client malformed body frame triggers raw command assembler exception","id":"CVE-2026-63335","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":6,"next":{"headline":"RabbitMQ Java client: TrustEverythingTrustManager used by default in useSslProtocol() enables MITM","id":"CVE-2026-63336"},"packages":[{"ecosystem":"Maven","fixed":["5.31.0"],"introduced":["0"],"last_affected":[],"package":"com.rabbitmq:amqp-client","purl":null,"source":"GHSA-qx7j-jv8m-fppr"},{"ecosystem":"Maven","fixed":["5.31.0"],"introduced":["0"],"last_affected":[],"package":"com.rabbitmq:amqp-client","purl":"pkg:maven/com.rabbitmq/amqp-client","source":"GHSA-qx7j-jv8m-fppr"}],"prev":{"headline":"draw.io: SSRF via DNS rebinding in ProxyServlet bypasses private IP blocklist","id":"CVE-2026-63334"},"products":["rabbitmq-java-client"],"published":"2026-08-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-18","vendors":["rabbitmq"]},"summary":"A malicious broker can cause a denial of service in RabbitMQ Java client applications by sending malformed AMQP frames that trigger an unhandled exception.","url":"https://insights.sbomify.com/CVE-2026-63335/"}