{"answers":{"affected":"1 open source package ship an affected version, including hickory-proto.","exploited":"There is no known exploitation of CVE-2026-123570 in the wild and no public exploit code.","exposure":"","fix":"Upgrade hickory-proto to 0.26.2 or later.","what":"CVE-2026-123570 is a high-severity vulnerability in hickory-dns, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123570 and fix it if it is affected.\n\nWhat it is: CVE-2026-123570 is a high-severity vulnerability in hickory-dns, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-123570 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hickory-proto (crates.io): affected from 0.18.0; fixed in 0.26.2\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-2026-123570/ (Markdown: https://insights.sbomify.com/CVE-2026-123570/index.md)","id":"CVE-2026-123570","markdown":"https://insights.sbomify.com/CVE-2026-123570/index.md","name":"CVE-2026-123570","record":{"aliases":["AZL-113197","DEBIAN-CVE-2026-123570","GHSA-67wc-6jq8-ghrc","GHSA-6rvc-hrvg-mqf2","RUSTSEC-2026-0491","UBUNTU-CVE-2026-123570"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"The DNS wire-format message parser in hickory-proto (Hickory DNS) 0.18 before 0.26.2 preallocates record vectors sized by the untrusted ANCOUNT, NSCOUNT, and ARCOUNT header fields before reading record data. Remote attackers can send a UDP datagram, or a spoofed response to a client/resolver, with these counts set to 65535, forcing about 18MB of allocation per message.","ecosystems":["crates.io"],"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":"Hickory DNS from 0.18 before 0.26.2 Memory Amplification DoS via RR Counts","id":"CVE-2026-123570","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":2,"next":{"headline":"Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding","id":"CVE-2026-123571"},"nickname":null,"packages":[{"ecosystem":"crates.io","fixed":["0.26.2"],"introduced":["0.18.0"],"last_affected":[],"package":"hickory-proto","purl":"pkg:cargo/hickory-proto","source":"RUSTSEC-2026-0491"}],"prev":{"headline":"Devalue before 5.6.3 Denial of Service via Sparse Array Serialization","id":"CVE-2026-123569"},"products":["hickory-dns"],"published":"2026-11-08","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"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":"2026-11-09","vendors":["hickory-dns"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123570/"}