{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-71218 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-71218 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 11 Aug 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-2026-71218 and fix it if it is affected.\n\nWhat it is: CVE-2026-71218 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 11 Aug 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-2026-71218 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-71218/ (Markdown: https://insights.sbomify.com/CVE-2026-71218/index.md)","id":"CVE-2026-71218","markdown":"https://insights.sbomify.com/CVE-2026-71218/index.md","name":"CVE-2026-71218","record":{"aliases":["AZL-95598","BELL-CVE-2026-71218","DEBIAN-CVE-2026-71218","GHSA-8m2w-v7g5-76v3","UBUNTU-CVE-2026-71218"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Network performance tool","requires_auth":"none","summary":"Remote attackers can cause denial of service in iperf3 by triggering unbounded memory allocation via crafted JSON messages.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service.","ecosystems":[],"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":"Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion","id":"CVE-2026-71218","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Gfs2-utils: gfs2-utils: stack overflow via alloca(1\u003c\u003cdi_depth) in hash table traversal","id":"CVE-2026-71219"},"packages":[],"prev":{"headline":"Denial of service in Red Hat Enterprise Linux 10","id":"CVE-2026-71217"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9"],"published":"2026-08-11","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-11","vendors":["Red Hat"]},"summary":"Remote attackers can cause denial of service in iperf3 by triggering unbounded memory allocation via crafted JSON messages.","url":"https://insights.sbomify.com/CVE-2026-71218/"}