{"answers":{"affected":"3 open source packages ship an affected version, including nltk. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33230 exists.","fix":"Upgrade nltk to 3.9.4 or later.","what":"CVE-2026-33230 is a medium-severity cross-site scripting vulnerability in nltk, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33230 and fix it if it is affected.\n\nWhat it is: CVE-2026-33230 is a medium-severity cross-site scripting vulnerability in nltk, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33230 exists.\n\nAffected packages and fixed versions:\n- nltk (PyPI): affected all versions; fixed in 3.9.4\n- nltk (PyPI): affected all versions; fixed in 3.9.4\n- nltk (PyPI): affected all versions; fixed in 3.9.4\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-2026-33230/ (Markdown: https://insights.sbomify.com/CVE-2026-33230/index.md)","id":"CVE-2026-33230","markdown":"https://insights.sbomify.com/CVE-2026-33230/index.md","name":"CVE-2026-33230","record":{"aliases":["DEBIAN-CVE-2026-33230","ECHO-71be-89bb-7761","GHSA-gfwx-w7gr-fvh7","MGASA-2026-0082","MINI-2m5f-4f52-x27m","PYSEC-2026-2235","ROOT-APP-PYPI-CVE-2026-33230","UBUNTU-CVE-2026-33230","USN-8302-1","openSUSE-SU-2026:10461-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Python NLP library","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in the browser of users running the local NLTK WordNet Browser server via a crafted URL.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"nltk","vendor":"nltk"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, `nltk.app.wordnet_app` contains a reflected cross-site scripting issue in the `lookup_...` route. A crafted `lookup_\u003cpayload\u003e` URL can inject arbitrary HTML/JavaScript into the response page because attacker-controlled `word` data is reflected into HTML without escaping. This impacts users running the local WordNet Browser server and can lead to script execution in the browser origin of that application. Commit 1c3f799607eeb088cab2491dcf806ae83c29ad8f fixes the issue.","ecosystems":["PyPI","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"nltk Vulnerable to Cross-site Scripting","id":"CVE-2026-33230","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"NLTK has unauthenticated remote shutdown in nltk.app.wordnet_app","id":"CVE-2026-33231"},"packages":[{"ecosystem":"PyPI","fixed":["3.9.4"],"introduced":["0"],"last_affected":[],"package":"nltk","purl":null,"source":"GHSA-gfwx-w7gr-fvh7"},{"ecosystem":"PyPI","fixed":["3.9.4"],"introduced":["0"],"last_affected":[],"package":"nltk","purl":"pkg:pypi/nltk","source":"GHSA-gfwx-w7gr-fvh7"},{"ecosystem":"PyPI","fixed":["3.9.4"],"introduced":["0"],"last_affected":[],"package":"nltk","purl":"pkg:pypi/nltk","source":"PYSEC-2026-2235"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.9.4-1.1"],"introduced":["0"],"last_affected":[],"package":"python-nltk","purl":"pkg:rpm/opensuse/python-nltk\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10461-1"}],"prev":{"headline":"XWiki Platform affected by remote code execution with script right through unprotected Velocity scripting API","id":"CVE-2026-33229"},"products":["nltk"],"published":"2026-03-20","related":[{"cvss_score":10,"headline":"Arbitrary Code Execution in NLTK StanfordSegmenter via Untrusted JAR Loading","id":"CVE-2026-0848","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":10,"headline":"Zip Slip Vulnerability in nltk/nltk Leading to Remote Code Execution","id":"CVE-2025-14009","kev_date_added":null,"published":"2026-02-18"},{"cvss_score":9.4,"headline":"NLTK before 3.10.0 Remote Code Execution via Unsafe Pickle Deserialization","id":"CVE-2026-78683","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.3,"headline":"NLTK before 3.10.3 Remote Code Execution via Unsafe Pickle Deserialization","id":"CVE-2026-79657","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.3,"headline":"NLTK before 3.10.3 JVM Argument Injection via Per-Call Options","id":"CVE-2026-79675","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":8.8,"headline":"NLTK 3.10.2 Path Traversal via corpus-reader constructors","id":"CVE-2026-79674","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":8.7,"headline":"nltk PorterStemmer before 3.10.3 Quadratic-time DoS","id":"CVE-2026-81722","kev_date_added":null,"published":"2026-08-27"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-24","vendors":["nltk"]},"summary":"Attackers can execute arbitrary JavaScript in the browser of users running the local NLTK WordNet Browser server via a crafted URL.","url":"https://insights.sbomify.com/CVE-2026-33230/"}