{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27831 exists.","fix":"No fix has been published for CVE-2026-27831 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-27831 is a high-severity memory corruption vulnerability in bluedragonsecurity rldns, published on 26 Feb 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-2026-27831 and fix it if it is affected.\n\nWhat it is: CVE-2026-27831 is a high-severity memory corruption vulnerability in bluedragonsecurity rldns, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27831 exists.\n\nAffected product: bluedragonsecurity rldns. 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-2026-27831/ (Markdown: https://insights.sbomify.com/CVE-2026-27831/index.md)","id":"CVE-2026-27831","markdown":"https://insights.sbomify.com/CVE-2026-27831/index.md","name":"CVE-2026-27831","record":{"aliases":[],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS server","requires_auth":"none","summary":"An attacker can cause a denial of service in the rldns DNS server via a heap-based out-of-bounds read vulnerability.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"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-125","name":"Out-of-bounds Read"}],"description":"rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-02-26","github_poc":1,"max_poc_stars":5,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-02-26T06:57:14Z","kind":"github_poc","ref":"https://github.com/bluedragonsecurity/CVE-2026-27831-POC","stars":5,"title":"Poc Exploit for CVE-2026-27831 - vulnerability discovered by : Antonius"}],"tier":"weaponised"},"has_fix":null,"headline":"rldns Vulnerable to Heap-based Out-of-Bounds Read","id":"CVE-2026-27831","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Group-Office Has Authenticated SQL Injection in advancedQueryData.comparator","id":"CVE-2026-27832"},"packages":[],"prev":{"headline":"c3p0 vulnerable to Remote Code Execution via unsafe deserialization of userOverridesAsString property","id":"CVE-2026-27830"},"products":["rldns"],"published":"2026-02-26","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-27","vendors":["bluedragonsecurity"]},"summary":"An attacker can cause a denial of service in the rldns DNS server via a heap-based out-of-bounds read vulnerability.","url":"https://insights.sbomify.com/CVE-2026-27831/"}