{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-102464 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-102464 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-102464 is a high-severity denial of service vulnerability in Eclipse Vert.x, published on 15 Oct 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-2026-102464 and fix it if it is affected.\n\nWhat it is: CVE-2026-102464 is a high-severity denial of service vulnerability in Eclipse Vert.x, published on 15 Oct 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-2026-102464 in the wild and no public exploit code.\n\nAffected product: Eclipse Vert.x. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-102464/ (Markdown: https://insights.sbomify.com/CVE-2026-102464/index.md)","id":"CVE-2026-102464","markdown":"https://insights.sbomify.com/CVE-2026-102464/index.md","name":"CVE-2026-102464","record":{"aliases":["GHSA-46xj-5735-6qrp","GHSA-g3vx-j9rx-jfm5"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Eclipse Vert.x MQTT","requires_auth":"none","summary":"A malicious MQTT broker can cause unbounded memory growth in Vert.x MQTT clients by withholding PUBREL packets, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"eclipse","cpe":[{"product":"vert.x","vendor":"eclipse"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/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":"In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Eclipse Vert.x MQTT (vertx-mqtt) MqttClient stores every inbound QoS 2 PUBLISH message received from the broker in an internal map (qos2inbound) while awaiting the corresponding PUBREL packet to complete the QoS 2 handshake. This map has no size limit; the maxInflightQueue option is enforced only on the outbound publish path and does not constrain inbound message retention.\n\nA malicious or compromised MQTT broker can exploit this by sending QoS 2 PUBLISH messages with distinct packet identifiers and withholding the PUBREL responses. Each incomplete handshake causes the client to retain the full publish message (topic, payload, and metadata) indefinitely, leading to unbounded memory growth in the Vert.x process. This can degrade the MQTT-consuming application or cause out-of-memory termination.\n\nThe impacted component is io.vertx:vertx-mqtt.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in Eclipse Vert.x","id":"CVE-2026-102464","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in Eclipse Vert.x","id":"CVE-2026-102465"},"packages":[],"prev":{"headline":"Denial of service in Eclipse Vert.x","id":"CVE-2026-102463"},"products":["Eclipse Vert.x"],"published":"2026-10-15","related":[{"cvss_score":9.8,"headline":"Path Traversal in Eclipse Vert","id":"CVE-2019-17640","kev_date_added":null,"published":"2020-10-15"},{"cvss_score":9.8,"headline":"Eclipse Vert.x does not properly neutralize '' (forward slashes) sequences that can resolve to an external location","id":"CVE-2018-12542","kev_date_added":null,"published":"2018-10-10"},{"cvss_score":9.8,"headline":"Moderate severity vulnerability that affects io.vertx:vertx-core","id":"CVE-2018-12544","kev_date_added":null,"published":"2018-10-10"},{"cvss_score":9.2,"headline":"Deserialization in Eclipse Vert.x","id":"CVE-2026-102469","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":8.8,"headline":"High severity vulnerability that affects io.vertx:vertx-web","id":"CVE-2018-12540","kev_date_added":null,"published":"2018-07-12"},{"cvss_score":8.7,"headline":"Denial of service in Eclipse Vert.x","id":"CVE-2026-102461","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":8.7,"headline":"Denial of service in Eclipse Vert.x","id":"CVE-2026-102467","kev_date_added":null,"published":"2026-10-15"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Eclipse Foundation"]},"summary":"A malicious MQTT broker can cause unbounded memory growth in Vert.x MQTT clients by withholding PUBREL packets, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-102464/"}