{"answers":{"affected":"2 open source packages ship an affected version, including com.rabbitmq:amqp-client.","exploited":"There is no known exploitation of CVE-2026-75516 in the wild and no public exploit code.","fix":"Upgrade com.rabbitmq:amqp-client to 5.34.0 or later.","what":"CVE-2026-75516 is a high-severity denial of service vulnerability in rabbitmq-java-client, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-75516 and fix it if it is affected.\n\nWhat it is: CVE-2026-75516 is a high-severity denial of service vulnerability in rabbitmq-java-client, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-75516 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.rabbitmq:amqp-client (Maven): affected all versions; fixed in 5.34.0\n- com.rabbitmq:amqp-client (Maven): affected all versions; fixed in 5.34.0\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-2026-75516/ (Markdown: https://insights.sbomify.com/CVE-2026-75516/index.md)","id":"CVE-2026-75516","markdown":"https://insights.sbomify.com/CVE-2026-75516/index.md","name":"CVE-2026-75516","record":{"aliases":["CLEANSTART-2026-FQ92351","CLEANSTART-2026-UX42229","CLEANSTART-2026-YJ89488","DEBIAN-CVE-2026-75516","ECHO-c374-3c74-70ef","GHSA-jh4v-gfqj-7rhx","MINI-22rv-ggc7-v585","MINI-3hcp-65rg-pcpf","MINI-58mq-q6vj-cx26","MINI-5h6w-q4cq-vfgj","MINI-5pqq-v769-cch4","MINI-5x2x-wjcx-rmj9","MINI-5xrv-3846-284f","MINI-64hh-hqv6-3jxj","MINI-mmqm-6q5j-fqpj","MINI-qm4h-x87q-wmcr","MINI-rc9m-wgg5-33mp","MINI-rv4v-g344-mggq","MINI-vwrw-h5vm-22fp","MINI-wh8x-99rh-r8xv","ROOT-APP-MAVEN-CVE-2026-75516","UBUNTU-CVE-2026-75516"],"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":"none","summary":"A malicious server or MITM attacker can cause client memory exhaustion and process termination by exploiting a frame size validation flaw in the RabbitMQ Java client.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.34.0, AMQConnection.start() applies Math.min(maxInboundMessageBodySize, frameMax) after Connection.Tune negotiation even though AMQP defines frameMax value zero as unlimited and ConnectionFactory.DEFAULT_FRAME_MAX is zero. When the client default and server-negotiated value are both zero, the result is passed to Utils.framePayloadLimit(int), which interprets zero as Integer.MAX_VALUE and disables the configured maxInboundMessageBodySize cap. A malicious AMQP server, or a man-in-the-middle attacker able to modify Connection.Tune and inject frames into the connection, can then send an oversized frame of any frame type, causing Frame.readFrom() to allocate a large byte array before content-level validation and potentially terminate the client process through memory exhaustion. This issue is fixed in version 5.34.0.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"RabbitMQ Java client: Frame-level OOM: Math.min(maxInboundMessageBodySize, 0) defeats frame size enforcement","id":"CVE-2026-75516","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":"Novu: Cross-Environment Integration Manipulation (IDOR)","id":"CVE-2026-75517"},"packages":[{"ecosystem":"Maven","fixed":["5.34.0"],"introduced":["0"],"last_affected":[],"package":"com.rabbitmq:amqp-client","purl":null,"source":"GHSA-jh4v-gfqj-7rhx"},{"ecosystem":"Maven","fixed":["5.34.0"],"introduced":["0"],"last_affected":[],"package":"com.rabbitmq:amqp-client","purl":"pkg:maven/com.rabbitmq/amqp-client","source":"GHSA-jh4v-gfqj-7rhx"}],"prev":{"headline":"BunkerWeb: rDNS bypass via missing forward-confirmation (FCrDNS) in blacklist, greylist, and antibot","id":"CVE-2026-75514"},"products":["rabbitmq-java-client"],"published":"2026-09-16","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["rabbitmq"]},"summary":"A malicious server or MITM attacker can cause client memory exhaustion and process termination by exploiting a frame size validation flaw in the RabbitMQ Java client.","url":"https://insights.sbomify.com/CVE-2026-75516/"}