{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-101338 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-101338 is a high-severity memory corruption vulnerability in NLnet Labs NSD, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-101338 and fix it if it is affected.\n\nWhat it is: CVE-2026-101338 is a high-severity memory corruption vulnerability in NLnet Labs NSD, published on 14 Oct 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-2026-101338 in the wild and no public exploit code.\n\nAffected product: NLnet Labs NSD. 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-2026-101338/ (Markdown: https://insights.sbomify.com/CVE-2026-101338/index.md)","id":"CVE-2026-101338","markdown":"https://insights.sbomify.com/CVE-2026-101338/index.md","name":"CVE-2026-101338","record":{"aliases":["ALPINE-CVE-2026-101338","DEBIAN-CVE-2026-101338","GHSA-r5wh-92fx-cv6j","UBUNTU-CVE-2026-101338"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"NSD DNS server","requires_auth":"low_privilege","summary":"A stack overwrite in NSD allows attackers to execute arbitrary code or cause denial of service via crafted SVCB or HTTPS resource records.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"NLnet Labs","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size.  Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).","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":"Stack overwrite from a specially crafted and formatted SVCB or HTTPS RR","id":"CVE-2026-101338","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Stack overwrite from a specially crafted and formatted HIP RR","id":"CVE-2026-101339"},"packages":[],"prev":{"headline":"Stack overwrite from specially formatted base64 RDATA field","id":"CVE-2026-101337"},"products":["NSD"],"published":"2026-10-14","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["NLnet Labs"]},"summary":"A stack overwrite in NSD allows attackers to execute arbitrary code or cause denial of service via crafted SVCB or HTTPS resource records.","url":"https://insights.sbomify.com/CVE-2026-101338/"}