{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-19668 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-19668 is a medium-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-2026-19668 and fix it if it is affected.\n\nWhat it is: CVE-2026-19668 is a medium-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-2026-19668 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-2026-19668/ (Markdown: https://insights.sbomify.com/CVE-2026-19668/index.md)","id":"CVE-2026-19668","markdown":"https://insights.sbomify.com/CVE-2026-19668/index.md","name":"CVE-2026-19668","record":{"aliases":["ALPINE-CVE-2026-19668","AZL-103338","BELL-CVE-2026-19668","DEBIAN-CVE-2026-19668","ECHO-dfd2-036e-f8e2","GHSA-qrrf-rhq5-mvxv","MINI-846j-g8w3-8w4r","MINI-99vp-w24v-967f","MINI-xqjh-9p2w-7gw6","UBUNTU-CVE-2026-19668"],"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":"Attackers can cause resource exhaustion in BIND recursive resolvers by sending specific invalid DNSSEC records, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","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-407","name":"Inefficient Algorithmic Complexity"}],"description":"A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record.  Default limits on \"max-records-per-type\" and \"max-types-per-name\" help mitigate the exposure.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-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":"Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching","id":"CVE-2026-19668","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":"Unbounded variable-length array in fuel gauge syscall verifiers allows kernel stack overflow from user mode","id":"CVE-2026-19669"},"packages":[],"prev":{"headline":"Remote assertion failure via 16-bit length truncation in `dns_ncache_add()`","id":"CVE-2026-19667"},"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":"Attackers can cause resource exhaustion in BIND recursive resolvers by sending specific invalid DNSSEC records, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-19668/"}