{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-0397 in the wild and no public exploit code.","fix":"Change a configuration setting.","what":"CVE-2026-0397 is a low-severity vulnerability in PowerDNS DNSdist, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-0397 and fix it if it is affected.\n\nWhat it is: CVE-2026-0397 is a low-severity vulnerability in PowerDNS DNSdist, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-0397 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-2026-0397/ (Markdown: https://insights.sbomify.com/CVE-2026-0397/index.md)","id":"CVE-2026-0397","markdown":"https://insights.sbomify.com/CVE-2026-0397/index.md","name":"CVE-2026-0397","record":{"aliases":["DEBIAN-CVE-2026-0397","GHSA-gjv7-4r9p-7hmx","UBUNTU-CVE-2026-0397"],"analysis":{"component_type":"server_software","fix_type":"configuration_change","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"DNS load balancer","requires_auth":"none","summary":"An attacker can extract configuration data from the PowerDNS DNSdist dashboard via CORS misconfiguration if the internal webserver is enabled.","user_interaction":"required","vuln_class":"misconfiguration"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OX","cpe":[{"product":"dnsdist","vendor":"powerdns"}],"cvss":{"score":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-942","name":"Permissive Cross-domain Security Policy with Untrusted Domains"}],"description":"When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.","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":"Information disclosure via CORS misconfiguration","id":"CVE-2026-0397","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"misconfiguration","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor","id":"CVE-2026-0398"},"packages":[],"prev":{"headline":"HTML injection in the web dashboard","id":"CVE-2026-0396"},"products":["DNSdist"],"published":"2026-03-31","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-31","vendors":["PowerDNS"]},"summary":"An attacker can extract configuration data from the PowerDNS DNSdist dashboard via CORS misconfiguration if the internal webserver is enabled.","url":"https://insights.sbomify.com/CVE-2026-0397/"}