{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33593 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-33593 is a high-severity denial of service vulnerability in PowerDNS DNSdist, published on 22 Apr 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-2026-33593 and fix it if it is affected.\n\nWhat it is: CVE-2026-33593 is a high-severity denial of service vulnerability in PowerDNS DNSdist, published on 22 Apr 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-2026-33593 in the wild and no public exploit code.\n\nAffected product: PowerDNS DNSdist. 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-2026-33593/ (Markdown: https://insights.sbomify.com/CVE-2026-33593/index.md)","id":"CVE-2026-33593","markdown":"https://insights.sbomify.com/CVE-2026-33593/index.md","name":"CVE-2026-33593","record":{"aliases":["DEBIAN-CVE-2026-33593","GHSA-x3rg-p4hx-x3wg","UBUNTU-CVE-2026-33593"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS load balancer","requires_auth":"none","summary":"A remote attacker can crash the DNSdist service by sending a crafted DNSCrypt query that triggers a divide by zero error.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OX","cpe":[{"product":"dnsdist","vendor":"powerdns"}],"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-369","name":"Divide By Zero"}],"description":"A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.","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":"Denial of service via crafted DNSCrypt query","id":"CVE-2026-33593","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Outgoing DoH excessive memory allocation","id":"CVE-2026-33594"},"packages":[],"prev":{"headline":"FindServers Memory Exhaustion in open62541","id":"CVE-2026-33592"},"products":["DNSdist"],"published":"2026-04-22","related":[{"cvss_score":8.8,"headline":"Cross-site request forgery in dnsdist","id":"CVE-2017-7557","kev_date_added":null,"published":"2017-08-22"},{"cvss_score":6.5,"headline":"Off-by-one access when processing crafted UDP responses","id":"CVE-2026-33602","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":6.5,"headline":"DNS over HTTPS ACL bypass","id":"CVE-2026-24029","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":5.9,"headline":"Out-of-bounds write when rewriting large DNS packets","id":"CVE-2026-27853","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":5.9,"headline":"Other in dnsdist","id":"CVE-2018-14663","kev_date_added":null,"published":"2018-11-26"},{"cvss_score":5.9,"headline":"Denial of service in dnsdist","id":"CVE-2016-7069","kev_date_added":null,"published":"2018-09-11"}],"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":"2026-04-22","vendors":["PowerDNS"]},"summary":"A remote attacker can crash the DNSdist service by sending a crafted DNSCrypt query that triggers a divide by zero error.","url":"https://insights.sbomify.com/CVE-2026-33593/"}