{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-0398 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-0398 is a medium-severity denial of service vulnerability in Powerdns Recursor, published on 9 Feb 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-2026-0398 and fix it if it is affected.\n\nWhat it is: CVE-2026-0398 is a medium-severity denial of service vulnerability in Powerdns Recursor, published on 9 Feb 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-2026-0398 in the wild and no public exploit code.\n\nAffected product: Powerdns Recursor. 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-2026-0398/ (Markdown: https://insights.sbomify.com/CVE-2026-0398/index.md)","id":"CVE-2026-0398","markdown":"https://insights.sbomify.com/CVE-2026-0398/index.md","name":"CVE-2026-0398","record":{"aliases":["DEBIAN-CVE-2026-0398","GHSA-6253-fq97-5xpm","UBUNTU-CVE-2026-0398"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"PowerDNS Recursor","requires_auth":"none","summary":"Attackers can cause resource exhaustion or cache poisoning in PowerDNS Recursor via crafted zones and CNAME chains.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OX","cpe":[{"product":"recursor","vendor":"powerdns"}],"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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.","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":"Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor","id":"CVE-2026-0398","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"powerdns:recursor","products":["powerdns:recursor"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in SonicOS","id":"CVE-2026-0399"},"packages":[],"prev":{"headline":"Information disclosure via CORS misconfiguration","id":"CVE-2026-0397"},"products":["Recursor"],"published":"2026-02-09","related":[{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2009-4009","kev_date_added":null,"published":"2010-01-08"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2020-10030","kev_date_added":null,"published":"2020-05-19"},{"cvss_score":8.2,"headline":"Crafted delegations or IP fragments can poison cached delegations in Recursor","id":"CVE-2025-59023","kev_date_added":null,"published":"2026-02-09"},{"cvss_score":7.5,"headline":"Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor","id":"CVE-2025-59030","kev_date_added":null,"published":"2025-12-09"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-22617","kev_date_added":null,"published":"2023-01-21"},{"cvss_score":7.5,"headline":"Memory corruption in pdns-recursor","id":"CVE-2018-16855","kev_date_added":null,"published":"2018-12-03"},{"cvss_score":7.5,"headline":"Other in n/a","id":"CVE-2009-4010","kev_date_added":null,"published":"2010-01-08"}],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-09","vendors":["PowerDNS"]},"summary":"Attackers can cause resource exhaustion or cache poisoning in PowerDNS Recursor via crafted zones and CNAME chains.","url":"https://insights.sbomify.com/CVE-2026-0398/"}