{"answers":{"affected":"3 open source packages ship an affected version, including github.com/coredns/coredns. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26018 in the wild and no public exploit code.","fix":"Upgrade github.com/coredns/coredns to 1.14.2 or later.","what":"CVE-2026-26018 is a high-severity denial of service vulnerability in coredns, published on 6 Mar 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-2026-26018 and fix it if it is affected.\n\nWhat it is: CVE-2026-26018 is a high-severity denial of service vulnerability in coredns, published on 6 Mar 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-2026-26018 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/coredns/coredns (Go): affected all versions; fixed in 1.14.2\n- github.com/coredns/coredns (Go): affected all versions; fixed in 1.14.2\n- github.com/coredns/coredns (Go): affected all versions; fixed in 1.14.2\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-2026-26018/ (Markdown: https://insights.sbomify.com/CVE-2026-26018/index.md)","id":"CVE-2026-26018","markdown":"https://insights.sbomify.com/CVE-2026-26018/index.md","name":"CVE-2026-26018","record":{"aliases":["AZL-79500","AZL-79529","CLEANSTART-2026-KF12369","CLEANSTART-2026-KZ65152","ECHO-9c6a-4edd-caa0","GHSA-h75p-j8xm-m278","GO-2026-4635","MINI-326m-9r86-v34g","MINI-3mg6-398m-3rpg","MINI-7f84-c9gv-52vm","MINI-7g2c-vv3j-98pr","MINI-7qv3-pj5q-6wfj","MINI-88xw-4v3g-xfmp","MINI-93vp-hmmx-4hq4","MINI-9cxc-w8r3-7h62","MINI-9fqf-2x2g-jwg9","MINI-9x9j-6hg7-9r26","MINI-c4w6-5r37-prr6","MINI-c7p5-vvv6-pjj6","MINI-h3pq-2x29-mf3w","MINI-j868-3cxf-984w","MINI-jp2p-4vp5-rhhv","MINI-m7fj-5c7x-fqcg","MINI-qc6g-6v9w-8v7h","MINI-qhf9-c88r-hxqw","MINI-rpm7-gmg8-v7mq","MINI-v4f9-vw8q-3hgw","OESA-2026-3184"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CoreDNS server","requires_auth":"none","summary":"An attacker can crash the CoreDNS server by sending crafted queries that exploit predictable PRNGs in the loop detection plugin.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"coredns","vendor":"coredns.io"}],"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-1241","name":"Use of Predictable Algorithm in Random Number Generator"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-337","name":"Predictable Seed in Pseudo-Random Number Generator (PRNG)"}],"description":"CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.","ecosystems":["Go"],"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":"CoreDNS Loop Detection Denial of Service Vulnerability","id":"CVE-2026-26018","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"@langchain/community affected by SSRF Bypass in RecursiveUrlLoader via insufficient URL origin validation","id":"CVE-2026-26019"},"packages":[{"ecosystem":"Go","fixed":["1.14.2"],"introduced":["0"],"last_affected":[],"package":"github.com/coredns/coredns","purl":null,"source":"GHSA-h75p-j8xm-m278"},{"ecosystem":"Go","fixed":["1.14.2"],"introduced":["0"],"last_affected":[],"package":"github.com/coredns/coredns","purl":"pkg:golang/github.com/coredns/coredns","source":"GHSA-h75p-j8xm-m278"},{"ecosystem":"Go","fixed":["1.14.2"],"introduced":["0"],"last_affected":[],"package":"github.com/coredns/coredns","purl":"pkg:golang/github.com/coredns/coredns","source":"GO-2026-4635"}],"prev":{"headline":"CoreDNS ACL Bypass","id":"CVE-2026-26017"},"products":["coredns"],"published":"2026-03-06","related":[{"cvss_score":8.7,"headline":"CoreDNS DNS-over-QUIC unbounded goroutine growth leads to denial of service","id":"CVE-2026-32934","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":8.7,"headline":"CoreDNS DoH GET path missing size validation causes CPU and memory amplification","id":"CVE-2026-32936","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":8.7,"headline":"CoreDNS TSIG authentication bypass on encrypted DNS transports","id":"CVE-2026-33190","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":8.2,"headline":"CoreDNS transfer plugin subzone ACL bypass via lexicographic zone comparison","id":"CVE-2026-33489","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":8.2,"headline":"CoreDNS TSIG authentication bypass on gRPC, QUIC, DoH, and DoH3 transports","id":"CVE-2026-35579","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":7.7,"headline":"CoreDNS ACL Bypass","id":"CVE-2026-26017","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":7.5,"headline":"CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoS","id":"CVE-2026-62309","kev_date_added":null,"published":"2026-07-16"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-07-15","vendors":["coredns"]},"summary":"An attacker can crash the CoreDNS server by sending crafted queries that exploit predictable PRNGs in the loop detection plugin.","url":"https://insights.sbomify.com/CVE-2026-26018/"}