{"answers":{"affected":"3 open source packages ship an affected version, including nltk. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-62383 in the wild and no public exploit code.","fix":"Upgrade nltk to 3.10.2 or later.","what":"CVE-2026-62383 is a medium-severity path traversal vulnerability in nltk, published on 22 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-62383 and fix it if it is affected.\n\nWhat it is: CVE-2026-62383 is a medium-severity path traversal vulnerability in nltk, published on 22 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-62383 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nltk (PyPI): affected from 3.10.0; fixed in 3.10.2\n- nltk (PyPI): affected from 3.10.0; fixed in 3.10.2\n- nltk (PyPI): affected from 3.10.0; fixed in 3.10.2\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-2026-62383/ (Markdown: https://insights.sbomify.com/CVE-2026-62383/index.md)","id":"CVE-2026-62383","markdown":"https://insights.sbomify.com/CVE-2026-62383/index.md","name":"CVE-2026-62383","record":{"aliases":["DEBIAN-CVE-2026-62383","GHSA-3hhw-38pf-pxj6","PYSEC-2026-3726","UBUNTU-CVE-2026-62383"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python NLP library","requires_auth":"low_privilege","summary":"Attackers can read arbitrary files by placing symlinks in the corpus directory, bypassing security checks in the nltk library.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"nltk","vendor":"nltk"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to the process by calling channels(), domains(), categories(), or fileids() methods with the symlink filename.","ecosystems":["PyPI"],"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":"nltk IPIPANCorpusReader Symlink Arbitrary File Read","id":"CVE-2026-62383","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"NLTK FramenetCorpusReader Symlink Sandbox Bypass before 3.10.2","id":"CVE-2026-62384"},"packages":[{"ecosystem":"PyPI","fixed":["3.10.2"],"introduced":["3.10.0"],"last_affected":[],"package":"nltk","purl":null,"source":"GHSA-3hhw-38pf-pxj6"},{"ecosystem":"PyPI","fixed":["3.10.2"],"introduced":["3.10.0"],"last_affected":[],"package":"nltk","purl":"pkg:pypi/nltk","source":"GHSA-3hhw-38pf-pxj6"},{"ecosystem":"PyPI","fixed":["3.10.2"],"introduced":["3.10.0"],"last_affected":[],"package":"nltk","purl":"pkg:pypi/nltk","source":"PYSEC-2026-3726"}],"prev":{"headline":"PasswordPusher before v2.9.6 Authentication Bypass via Null Comparison","id":"CVE-2026-62382"},"products":["nltk"],"published":"2026-08-22","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":"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-26","vendors":["nltk"]},"summary":"Attackers can read arbitrary files by placing symlinks in the corpus directory, bypassing security checks in the nltk library.","url":"https://insights.sbomify.com/CVE-2026-62383/"}