{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12199 exists.","fix":"No fix has been published for CVE-2026-12199 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-12199 is a high-severity denial of service vulnerability in nltk/nltk, published on 17 Jun 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-2026-12199 and fix it if it is affected.\n\nWhat it is: CVE-2026-12199 is a high-severity denial of service vulnerability in nltk/nltk, published on 17 Jun 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-2026-12199 exists.\n\nAffected product: nltk/nltk. 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-2026-12199/ (Markdown: https://insights.sbomify.com/CVE-2026-12199/index.md)","id":"CVE-2026-12199","markdown":"https://insights.sbomify.com/CVE-2026-12199/index.md","name":"CVE-2026-12199","record":{"aliases":["DEBIAN-CVE-2026-12199","GHSA-7jvr-hv34-f3rw","UBUNTU-CVE-2026-12199"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python NLP library","requires_auth":"none","summary":"Unauthenticated attackers can remotely shut down the local WordNet Browser HTTP server by sending a specific GET request, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntr_ai","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"A vulnerability in `nltk.app.wordnet_app` up to version 3.9.3 allows unauthenticated remote shutdown of the local WordNet Browser HTTP server when started in its default mode. The server listens on all interfaces and processes a specific unauthenticated GET request (`/SHUTDOWN%20THE%20SERVER`) to terminate the process immediately via `os._exit(0)`. This results in a denial of service, impacting service availability. The issue arises due to insufficient authentication and protection mechanisms for critical server functions.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Unauthenticated Denial of Service in nltk.app.wordnet_app","id":"CVE-2026-12199","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow","id":"CVE-2026-12200"},"packages":[],"prev":{"headline":"Microweber API Endpoint thumbnail_img userfiles_path path traversal","id":"CVE-2026-12198"},"products":["nltk/nltk"],"published":"2026-06-17","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-17","vendors":["nltk"]},"summary":"Unauthenticated attackers can remotely shut down the local WordNet Browser HTTP server by sending a specific GET request, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-12199/"}