{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33594 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-33594 is a medium-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-2026-33594 and fix it if it is affected.\n\nWhat it is: CVE-2026-33594 is a medium-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-2026-33594 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-2026-33594/ (Markdown: https://insights.sbomify.com/CVE-2026-33594/index.md)","id":"CVE-2026-33594","markdown":"https://insights.sbomify.com/CVE-2026-33594/index.md","name":"CVE-2026-33594","record":{"aliases":["DEBIAN-CVE-2026-33594","GHSA-x24g-wfwp-9pcm","UBUNTU-CVE-2026-33594"],"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 cause excessive memory consumption in PowerDNS DNSdist by flooding queries to an overloaded DoH backend, leading to service disruption.","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":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":"A client can trigger excessive memory allocation by generating a lot of queries that are routed to an overloaded DoH backend, causing queries to accumulate into a buffer that will not be released until the end of the connection.","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":"Outgoing DoH excessive memory allocation","id":"CVE-2026-33594","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":"DoQ/DoH3 excessive memory allocation","id":"CVE-2026-33595"},"packages":[],"prev":{"headline":"Denial of service via crafted DNSCrypt query","id":"CVE-2026-33593"},"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":7.5,"headline":"Denial of service via crafted DNSCrypt query","id":"CVE-2026-33593","kev_date_added":null,"published":"2026-04-22"},{"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 cause excessive memory consumption in PowerDNS DNSdist by flooding queries to an overloaded DoH backend, leading to service disruption.","url":"https://insights.sbomify.com/CVE-2026-33594/"}