{"answers":{"affected":"3 open source packages ship an affected version, including gdown. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40491 exists.","fix":"Upgrade gdown to 5.2.2 or later.","what":"CVE-2026-40491 is a medium-severity path traversal vulnerability in wkentaro gdown, published on 18 Apr 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-2026-40491 and fix it if it is affected.\n\nWhat it is: CVE-2026-40491 is a medium-severity path traversal vulnerability in wkentaro gdown, published on 18 Apr 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-2026-40491 exists.\n\nAffected packages and fixed versions:\n- gdown (PyPI): affected all versions; fixed in 5.2.2\n- gdown (PyPI): affected all versions; fixed in 5.2.2\n- gdown (PyPI): affected all versions; fixed in 5.2.2\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-2026-40491/ (Markdown: https://insights.sbomify.com/CVE-2026-40491/index.md)","id":"CVE-2026-40491","markdown":"https://insights.sbomify.com/CVE-2026-40491/index.md","name":"CVE-2026-40491","record":{"aliases":["DEBIAN-CVE-2026-40491","GHSA-76hw-p97h-883f","PYSEC-2026-2158","UBUNTU-CVE-2026-40491"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Python download library","requires_auth":"none","summary":"Attackers can achieve arbitrary file write and remote code execution by exploiting path traversal in gdown's archive extraction functionality.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"gdown","vendor":"wkentaro"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"gdown is a Google Drive public file/folder downloader. Versions prior to 5.2.2 are vulnerable to a Path Traversal attack within the extractall functionality. When extracting a maliciously crafted ZIP or TAR archive, the library fails to sanitize or validate the filenames of the archive members. This allow files to be written outside the intended destination directory, potentially leading to arbitrary file overwrite and Remote Code Execution (RCE). Version 5.2.2 contains a fix.","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":"gdown Affected by Arbitrary File Write via Path Traversal in gdown.extractall","id":"CVE-2026-40491","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"SAIL has heap buffer overflow in XWD decoder — bits_per_pixel vs pixmap_depth type confusion in byte-swap","id":"CVE-2026-40492"},"packages":[{"ecosystem":"PyPI","fixed":["5.2.2"],"introduced":["0"],"last_affected":[],"package":"gdown","purl":null,"source":"GHSA-76hw-p97h-883f"},{"ecosystem":"PyPI","fixed":["5.2.2"],"introduced":["0"],"last_affected":[],"package":"gdown","purl":"pkg:pypi/gdown","source":"GHSA-76hw-p97h-883f"},{"ecosystem":"PyPI","fixed":["5.2.2"],"introduced":["0"],"last_affected":[],"package":"gdown","purl":"pkg:pypi/gdown","source":"PYSEC-2026-2158"}],"prev":{"headline":"AsyncHttpClient leaks authorization credentials to untrusted domains on cross-origin redirects","id":"CVE-2026-40490"},"products":["gdown"],"published":"2026-04-18","related":[],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-20","vendors":["wkentaro"]},"summary":"Attackers can achieve arbitrary file write and remote code execution by exploiting path traversal in gdown's archive extraction functionality.","url":"https://insights.sbomify.com/CVE-2026-40491/"}