{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-5946 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-5946 is a high-severity denial of service vulnerability in Isc Bind, published on 20 May 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-2026-5946 and fix it if it is affected.\n\nWhat it is: CVE-2026-5946 is a high-severity denial of service vulnerability in Isc Bind, published on 20 May 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-2026-5946 in the wild and no public exploit code.\n\nAffected product: Isc Bind. 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-2026-5946/ (Markdown: https://insights.sbomify.com/CVE-2026-5946/index.md)","id":"CVE-2026-5946","markdown":"https://insights.sbomify.com/CVE-2026-5946/index.md","name":"CVE-2026-5946","record":{"aliases":["ALPINE-CVE-2026-5946","AZL-87096","BELL-CVE-2026-5946","CLSA-2026-1780068979","CLSA-2026-1780476189","CLSA-2026-1780508058","CLSA-2026-1790158621","DEBIAN-CVE-2026-5946","ECHO-a977-35ce-16df","GHSA-cqgq-ff3f-rj7r","MINI-qcgc-3j7r-3xhr","UBUNTU-CVE-2026-5946"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"BIND DNS server","requires_auth":"none","summary":"Attackers can cause denial of service in BIND by sending crafted DNS messages with non-IN classes, triggering assertion failures in the named daemon.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[{"product":"bind","vendor":"isc"}],"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-1287","name":"Improper Validation of Specified Type of Input"},{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"},{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"},{"id":"CWE-617","name":"Reachable Assertion"},{"id":"CWE-20","name":"Improper Input Validation"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`.\nThis issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-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":"Invalid handling of CLASS != IN","id":"CVE-2026-5946","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"isc:bind","products":["isc:bind"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"SIG(0) validation during query flood may lead to undefined behavior","id":"CVE-2026-5947"},"packages":[],"prev":{"headline":"Cisco Intersight Device Connector for Nutanix Prism Central Unauthenticated API Access","id":"CVE-2026-5944"},"products":["BIND 9"],"published":"2026-05-20","related":[{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-0122","kev_date_added":null,"published":"2008-01-16"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0010","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0011","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0013","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2000-1029","kev_date_added":null,"published":"2000-11-29"},{"cvss_score":10,"headline":"Denial of service in n/a","id":"CVE-1999-0837","kev_date_added":null,"published":"2000-01-04"},{"cvss_score":8.5,"headline":"Denial of service in n/a","id":"CVE-2012-1667","kev_date_added":null,"published":"2012-06-05"}],"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":"2026-09-17","vendors":["ISC"]},"summary":"Attackers can cause denial of service in BIND by sending crafted DNS messages with non-IN classes, triggering assertion failures in the named daemon.","url":"https://insights.sbomify.com/CVE-2026-5946/"}