{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82309 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82309 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82309 is a medium-severity denial of service vulnerability, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82309 and fix it if it is affected.\n\nWhat it is: CVE-2026-82309 is a medium-severity denial of service vulnerability, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-82309 in the wild and no public exploit code.\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-2026-82309/ (Markdown: https://insights.sbomify.com/CVE-2026-82309/index.md)","id":"CVE-2026-82309","markdown":"https://insights.sbomify.com/CVE-2026-82309/index.md","name":"CVE-2026-82309","record":{"aliases":["GHSA-6399-5qhh-48h5"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl robots validation library","requires_auth":"low_privilege","summary":"Attackers can cause denial of service by triggering unbounded outbound DNS queries via a forward-confirmation loop in the Perl Robots::Validate library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-405","name":"Asymmetric Resource Consumption (Amplification)"}],"description":"Robots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation loop that does not bound the names it queries.\n\n_check_dns issues one PTR query for the client address, keeps the returned names matching the rule's domain, and issues a forward query for each until one resolves back to that address. Nothing bounds that list, and a client controls the reverse zone for its own address, so it chooses how many names the PTR answer holds. Net::DNS refetches a truncated answer over TCP by default, so the 512-byte UDP payload does not cap it either.\n\nAny client whose User-Agent matches a rule with a domain reaches _check_dns. Each forward name is distinct and client-chosen, so every query misses the local cache and is resolved against the authoritative servers for that domain. The queries are synchronous, so the caller is held until all of them answer or time out.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Robots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation l","id":"CVE-2026-82309","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":"Apache Airflow FAB provider: FAB auth manager: deactivated users retain and renew Core API JWT access","id":"CVE-2026-82310"},"packages":[],"prev":{"headline":"Multiple Vulnerabilities in Dolusoft Software's SOPLOG","id":"CVE-2026-82307"},"products":[],"published":"2026-09-04","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":"2026-09-08","vendors":[]},"summary":"Attackers can cause denial of service by triggering unbounded outbound DNS queries via a forward-confirmation loop in the Perl Robots::Validate library.","url":"https://insights.sbomify.com/CVE-2026-82309/"}