{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90472 exists.","fix":"No fix has been published for CVE-2026-90472 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-90472 is a medium-severity denial of service vulnerability in msgpack-java, published on 12 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-2026-90472 and fix it if it is affected.\n\nWhat it is: CVE-2026-90472 is a medium-severity denial of service vulnerability in msgpack-java, published on 12 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-2026-90472 exists.\n\nAffected product: msgpack-java. 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-2026-90472/ (Markdown: https://insights.sbomify.com/CVE-2026-90472/index.md)","id":"CVE-2026-90472","markdown":"https://insights.sbomify.com/CVE-2026-90472/index.md","name":"CVE-2026-90472","record":{"aliases":["DEBIAN-CVE-2026-90472","GHSA-h5hr-vppv-v9cg","UBUNTU-CVE-2026-90472"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java msgpack library","requires_auth":"none","summary":"Attackers can cause denial of service in msgpack-java by sending deeply nested arrays that trigger a stack overflow during deserialization.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"msgpack-java through 0.9.12 contains a stack overflow vulnerability in MessageUnpacker.unpackValue() that recursively deserializes arrays and maps without nesting depth limits. Attackers can craft payloads with deeply nested arrays to exhaust the deserializing thread's stack and trigger StackOverflowError, causing per-request deserialization failures.","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":"msgpack-java through 0.9.12 Stack Overflow via Nested Arrays","id":"CVE-2026-90472","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":"msgpack-java through 0.9.12 Integer Overflow via MAP32","id":"CVE-2026-90473"},"packages":[],"prev":{"headline":"aiosmtplib before 5.1.3 ESMTP Parameter Injection via unvalidated addresses","id":"CVE-2026-90467"},"products":["msgpack-java"],"published":"2026-09-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-24","vendors":["msgpack"]},"summary":"Attackers can cause denial of service in msgpack-java by sending deeply nested arrays that trigger a stack overflow during deserialization.","url":"https://insights.sbomify.com/CVE-2026-90472/"}