{"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-2026-0846 exists.","fix":"Upgrade nltk to 3.9.3 or later.","what":"CVE-2026-0846 is a high-severity path traversal vulnerability in nltk/nltk, published on 9 Mar 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-2026-0846 and fix it if it is affected.\n\nWhat it is: CVE-2026-0846 is a high-severity path traversal vulnerability in nltk/nltk, published on 9 Mar 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-2026-0846 exists.\n\nAffected packages and fixed versions:\n- nltk (PyPI): affected all versions up to 3.9.2; no fix listed\n- nltk (PyPI): affected all versions; fixed in 3.9.3\n- nltk (PyPI): affected all versions; fixed in 3.9.3\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-2026-0846/ (Markdown: https://insights.sbomify.com/CVE-2026-0846/index.md)","id":"CVE-2026-0846","markdown":"https://insights.sbomify.com/CVE-2026-0846/index.md","name":"CVE-2026-0846","record":{"aliases":["DEBIAN-CVE-2026-0846","ECHO-dec7-e670-9a1b","GHSA-h8wq-7xc4-p3qx","PYSEC-2026-97"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Python NLP library","requires_auth":"none","summary":"Attackers can read arbitrary system files by providing absolute or traversal paths to the filestring function in the nltk library.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntr_ai","cpe":[{"product":"nltk","vendor":"nltk"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","version":"3.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-36","name":"Absolute Path Traversal"}],"description":"A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation of input paths. The function directly opens files specified by user input without sanitization, enabling attackers to access sensitive system files by providing absolute paths or traversal paths. This vulnerability can be exploited locally or remotely, particularly in scenarios where the function is used in web APIs or other interfaces that accept user-supplied input.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Arbitrary File Read via Absolute Path Input in nltk.util.filestring()","id":"CVE-2026-0846","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"Path Traversal in nltk/nltk","id":"CVE-2026-0847"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["3.9.2"],"package":"nltk","purl":"pkg:pypi/nltk","source":"PYSEC-2026-97"},{"ecosystem":"PyPI","fixed":["3.9.3"],"introduced":["0"],"last_affected":[],"package":"nltk","purl":null,"source":"GHSA-h8wq-7xc4-p3qx"},{"ecosystem":"PyPI","fixed":["3.9.3"],"introduced":["0"],"last_affected":[],"package":"nltk","purl":"pkg:pypi/nltk","source":"GHSA-h8wq-7xc4-p3qx"}],"prev":{"headline":"WCFM - WooCommerce Frontend Manager \u003c= 6.7.24 - Authenticated (Shop Manager+) Arbitrary Options Update","id":"CVE-2026-0845"},"products":["nltk/nltk"],"published":"2026-03-09","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["nltk"]},"summary":"Attackers can read arbitrary system files by providing absolute or traversal paths to the filestring function in the nltk library.","url":"https://insights.sbomify.com/CVE-2026-0846/"}