{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-81563 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-81563 is a high-severity denial of service vulnerability in ISC BIND 9, published on 16 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-2026-81563 and fix it if it is affected.\n\nWhat it is: CVE-2026-81563 is a high-severity denial of service vulnerability in ISC BIND 9, published on 16 Sep 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-2026-81563 in the wild and no public exploit code.\n\nAffected product: ISC BIND 9. 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-2026-81563/ (Markdown: https://insights.sbomify.com/CVE-2026-81563/index.md)","id":"CVE-2026-81563","markdown":"https://insights.sbomify.com/CVE-2026-81563/index.md","name":"CVE-2026-81563","record":{"aliases":["ALPINE-CVE-2026-81563","AZL-103347","BELL-CVE-2026-81563","DEBIAN-CVE-2026-81563","ECHO-8077-0c27-d434","GHSA-vrwj-p746-fr2r","MINI-2jrv-h4xg-v386","MINI-8r35-rg2q-cv64","MINI-9mfm-prx5-g8q8","UBUNTU-CVE-2026-81563"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"BIND DNS resolver","requires_auth":"none","summary":"A remote attacker can cause resource exhaustion in the BIND resolver by sending specific SVCB records, preventing new recursive lookups.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.","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":"SVCB AliasMode additional-data error leaks qpcache references","id":"CVE-2026-81563","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":"Path traversal in SP Page Builder (Free and Pro) extension for Joomla","id":"CVE-2026-81564"},"packages":[],"prev":{"headline":"AlexGladkov claude-in-mobile client.ts execSync os command injection","id":"CVE-2026-81562"},"products":["BIND 9"],"published":"2026-09-16","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":"2026-09-17","vendors":["ISC"]},"summary":"A remote attacker can cause resource exhaustion in the BIND resolver by sending specific SVCB records, preventing new recursive lookups.","url":"https://insights.sbomify.com/CVE-2026-81563/"}