{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-95843 exists.","fix":"No fix has been published for CVE-2026-95843 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-95843 is a high-severity denial of service vulnerability in moquette-io moquette, published on 23 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-2026-95843 and fix it if it is affected.\n\nWhat it is: CVE-2026-95843 is a high-severity denial of service vulnerability in moquette-io moquette, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-95843 exists.\n\nAffected product: moquette-io moquette. 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-2026-95843/ (Markdown: https://insights.sbomify.com/CVE-2026-95843/index.md)","id":"CVE-2026-95843","markdown":"https://insights.sbomify.com/CVE-2026-95843/index.md","name":"CVE-2026-95843","record":{"aliases":[],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java MQTT broker","requires_auth":"none","summary":"A remote attacker can crash the MQTT broker's command processing loop by sending a malformed shared subscription filter, denying service to other clients.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"moquette","vendor":"moquette"}],"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-20","name":"Improper Input Validation"}],"description":"Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client can send a filter such as $share/grp without a topic-filter portion, causing a StringIndexOutOfBoundsException while calculating the share name. The exception terminates command handling on the shared session event loop and can deny service to other client sessions assigned to that loop. This issue is fixed in version 0.18.1.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Moquette malformed shared subscriptions can crash command processing","id":"CVE-2026-95843","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Moquette deeply nested MQTT topics can cause stack exhaustion","id":"CVE-2026-95844"},"packages":[],"prev":{"headline":"Moquette uncaught MQTT command exceptions can terminate shared session event loops","id":"CVE-2026-95842"},"products":["moquette"],"published":"2026-09-23","related":[{"cvss_score":9.6,"headline":"Moquette pattern ACL wildcard injection allows cross-tenant authorization bypass","id":"CVE-2026-85724","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":9.3,"headline":"Moquette fails open when configured authentication or authorization classes cannot load","id":"CVE-2026-95848","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":8.8,"headline":"Moquette client IDs can cause cross-session H2 durable-queue corruption","id":"CVE-2026-95847","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":8.7,"headline":"Moquette uncaught MQTT command exceptions can terminate shared session event loops","id":"CVE-2026-95842","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":8.7,"headline":"Moquette deeply nested MQTT topics can cause stack exhaustion","id":"CVE-2026-95844","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":8.7,"headline":"Moquette unbounded per-session message queues allow memory exhaustion","id":"CVE-2026-95845","kev_date_added":null,"published":"2026-09-23"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-23","vendors":["moquette-io"]},"summary":"A remote attacker can crash the MQTT broker's command processing loop by sending a malformed shared subscription filter, denying service to other clients.","url":"https://insights.sbomify.com/CVE-2026-95843/"}