{"id":"CVE-2026-29778","aliases":["EUVD-2026-10162","GHSA-6px9-j4qr-xfjw","PYSEC-2026-121"],"status":"published","title":"pyLoad: Arbitrary File Write via Path Traversal in edit_package()","description":"pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00571,"percentile":0.47505,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-23"],"published":"2026-03-05T00:32:19Z","modified":"2026-06-17T10:29:52Z","fixes":[{"ecosystem":"PyPI","package":"pyload-ng","fixed_in":["0.5.0b3.dev97"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"pyload-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.5.0b3.dev13"},{"last_affected":"0.5.0b3.dev96"},{"fixed":"0.5.0b3.dev97"}]}]},{"source":"osv","ecosystem":"PyPI","package":"pyload-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.5.0b3.dev13"},{"fixed":"0.5.0b3.dev97"}]}],"versions":["0.5.0b3.dev13","0.5.0b3.dev14","0.5.0b3.dev17","0.5.0b3.dev18","0.5.0b3.dev19","0.5.0b3.dev20","0.5.0b3.dev21","0.5.0b3.dev22","0.5.0b3.dev24","0.5.0b3.dev26","0.5.0b3.dev27","0.5.0b3.dev28","0.5.0b3.dev29","0.5.0b3.dev30","0.5.0b3.dev31","0.5.0b3.dev32","0.5.0b3.dev33","0.5.0b3.dev34","0.5.0b3.dev35","0.5.0b3.dev38","0.5.0b3.dev39","0.5.0b3.dev40","0.5.0b3.dev41","0.5.0b3.dev42","0.5.0b3.dev43","0.5.0b3.dev44","0.5.0b3.dev45","0.5.0b3.dev46","0.5.0b3.dev47","0.5.0b3.dev48","0.5.0b3.dev49","0.5.0b3.dev50","0.5.0b3.dev51","0.5.0b3.dev52","0.5.0b3.dev53","0.5.0b3.dev54","0.5.0b3.dev57","0.5.0b3.dev60","0.5.0b3.dev62","0.5.0b3.dev64","0.5.0b3.dev65","0.5.0b3.dev66","0.5.0b3.dev67","0.5.0b3.dev68","0.5.0b3.dev69","0.5.0b3.dev70","0.5.0b3.dev71","0.5.0b3.dev72","0.5.0b3.dev73","0.5.0b3.dev74","0.5.0b3.dev75","0.5.0b3.dev76","0.5.0b3.dev77","0.5.0b3.dev78","0.5.0b3.dev79","0.5.0b3.dev80","0.5.0b3.dev81","0.5.0b3.dev82","0.5.0b3.dev85","0.5.0b3.dev87","0.5.0b3.dev88","0.5.0b3.dev89","0.5.0b3.dev90","0.5.0b3.dev91","0.5.0b3.dev92","0.5.0b3.dev93","0.5.0b3.dev94","0.5.0b3.dev95","0.5.0b3.dev96"]},{"source":"osv","ecosystem":"PyPI","package":"pyload-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.5.0b3.dev13"},{"fixed":"0.5.0b3.dev97"}]}],"versions":["0.5.0b3.dev13","0.5.0b3.dev14","0.5.0b3.dev17","0.5.0b3.dev18","0.5.0b3.dev19","0.5.0b3.dev20","0.5.0b3.dev21","0.5.0b3.dev22","0.5.0b3.dev24","0.5.0b3.dev26","0.5.0b3.dev27","0.5.0b3.dev28","0.5.0b3.dev29","0.5.0b3.dev30","0.5.0b3.dev31","0.5.0b3.dev32","0.5.0b3.dev33","0.5.0b3.dev34","0.5.0b3.dev35","0.5.0b3.dev38","0.5.0b3.dev39","0.5.0b3.dev40","0.5.0b3.dev41","0.5.0b3.dev42","0.5.0b3.dev43","0.5.0b3.dev44","0.5.0b3.dev45","0.5.0b3.dev46","0.5.0b3.dev47","0.5.0b3.dev48","0.5.0b3.dev49","0.5.0b3.dev50","0.5.0b3.dev51","0.5.0b3.dev52","0.5.0b3.dev53","0.5.0b3.dev54","0.5.0b3.dev57","0.5.0b3.dev60","0.5.0b3.dev62","0.5.0b3.dev64","0.5.0b3.dev65","0.5.0b3.dev66","0.5.0b3.dev67","0.5.0b3.dev68","0.5.0b3.dev69","0.5.0b3.dev70","0.5.0b3.dev71","0.5.0b3.dev72","0.5.0b3.dev73","0.5.0b3.dev74","0.5.0b3.dev75","0.5.0b3.dev76","0.5.0b3.dev77","0.5.0b3.dev78","0.5.0b3.dev79","0.5.0b3.dev80","0.5.0b3.dev81","0.5.0b3.dev82","0.5.0b3.dev85","0.5.0b3.dev87","0.5.0b3.dev88","0.5.0b3.dev89","0.5.0b3.dev90","0.5.0b3.dev91","0.5.0b3.dev92","0.5.0b3.dev93","0.5.0b3.dev94","0.5.0b3.dev95","0.5.0b3.dev96"]}],"products":[{"vendor":"pyload","product":"pyload"},{"vendor":"pyload-ng_project","product":"pyload-ng"}],"references":[{"url":"https://github.com/pyload/pyload/security/advisories/GHSA-6px9-j4qr-xfjw","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","web","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29778","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/pyload-ng/PYSEC-2026-121.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6px9-j4qr-xfjw"},{"url":"https://github.com/pyload/pyload","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-29778","title":"pyLoad: Arbitrary File Write via Path Traversal in edit_package()","description":"pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.","status":"published","published":"2026-03-07T15:28:36.919Z","modified":"2026-03-09T18:26:46.896Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T14:19:56.284359Z"}],"euvd":[{"id":"EUVD-2026-10162","description":"pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.","status":"published","published":"2026-03-07T15:28:36Z","modified":"2026-03-09T18:26:46Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T19:48:06.581696Z"}],"ghsa":[{"id":"GHSA-6px9-j4qr-xfjw","title":"pyLoad has an Arbitrary File Write via Path Traversal in edit_package()","description":"The edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences.\n\nExploitation\n\nAn authenticated user with MODIFY permission can bypass the sanitization by submitting a payload such as:\n`pack_folder=..././..././..././tmp`\n\nAfter the single-pass replacement, this becomes:\n`../../../tmp`\n\nBecause the traversal sequences are not properly validated, the resulting normalized path escapes the intended storage directory and writes files to /tmp or other locations.","status":"published","published":"2026-03-05T00:32:19Z","modified":"2026-06-08T19:07:15Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T14:40:18.682012Z"}],"nvd":[{"id":"CVE-2026-29778","description":"pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.","status":"published","published":"2026-03-07T16:15:54.8Z","modified":"2026-06-17T10:29:52.13Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T14:12:08.279852Z"}],"osv":[{"id":"GHSA-6px9-j4qr-xfjw","title":"pyLoad has an Arbitrary File Write via Path Traversal in edit_package()","description":"The edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences.\n\nExploitation\n\nAn authenticated user with MODIFY permission can bypass the sanitization by submitting a payload such as:\n`pack_folder=..././..././..././tmp`\n\nAfter the single-pass replacement, this becomes:\n`../../../tmp`\n\nBecause the traversal sequences are not properly validated, the resulting normalized path escapes the intended storage directory and writes files to /tmp or other locations.","status":"published","published":"2026-03-05T00:32:19Z","modified":"2026-06-08T19:15:12.450337909Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"high"}],"cwes":["CWE-23"],"updated_at":"2026-11-02T15:46:39.965326Z"},{"id":"PYSEC-2026-121","description":"pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of \"../\", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.","status":"published","published":"2026-03-07T16:15:54.8Z","modified":"2026-05-20T09:19:15.599745Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:54.622769Z"}]}}