{"id":"CVE-2021-32840","aliases":["EUVD-2022-1085","GHSA-m22m-h4rf-pwq3","UBUNTU-CVE-2021-32840"],"status":"published","title":"Path Traversal in SharpZipLib","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01906,"percentile":0.79917,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2022-01-26T21:05:10Z","modified":"2026-10-20T10:53:46Z","fixes":[{"ecosystem":"NuGet","package":"SharpZipLib","fixed_in":["1.3.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"SharpZipLib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3"}]}]},{"source":"osv","ecosystem":"NuGet","package":"SharpZipLib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3"}]}],"versions":["0.86.0","1.0.0","1.0.0-alpha1","1.0.0-alpha2","1.0.0-rc1","1.0.0-rc2","1.1.0","1.2.0","1.3.0","1.3.1","1.3.2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mono","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0.105+dfsg-3.2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mono","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0.105+dfsg-3.4","6.8.0.105+dfsg-3.5ubuntu1","6.8.0.105+dfsg-3.6ubuntu1","6.8.0.105+dfsg-3.6ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"mono","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.12.0.199+dfsg-3","6.12.0.199+dfsg-6"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"mono","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.14.1+ds2-2","6.14.1+ds2-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"mono","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.12.0.199+dfsg-6","6.14.1+ds2-1","6.14.1+ds2-2"]}],"products":[{"vendor":"icsharpcode","product":"sharpziplib"},{"vendor":"sharpziplib_project","product":"sharpziplib"}],"references":[{"url":"https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/icsharpcode/SharpZipLib/commit/a0e96de70b5264f4c919b09253b1522bc7a221cc","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32840","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m22m-h4rf-pwq3"},{"url":"https://github.com/icsharpcode/SharpZipLib","tags":["package"]},{"url":"https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-32840","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32840","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-32840","title":"Path Traversal in SharpZipLib","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-01-26T21:05:10Z","modified":"2025-04-22T18:32:29.435Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2022-1085","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-01-26T21:05:10Z","modified":"2025-04-22T18:32:29Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T20:52:15.026784Z"}],"ghsa":[{"id":"GHSA-m22m-h4rf-pwq3","title":"Path Traversal in SharpZipLib","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-02-01T16:22:50Z","modified":"2023-02-03T05:04:58Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:36:42.703723Z"}],"nvd":[{"id":"CVE-2021-32840","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-01-26T21:15:13.097Z","modified":"2026-06-17T03:53:44.253Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:07:03.821385Z"}],"osv":[{"id":"CVE-2021-32840","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-01-26T21:15:13.097Z","modified":"2026-10-20T10:53:46.174660715Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"GHSA-m22m-h4rf-pwq3","title":"Path Traversal in SharpZipLib","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-02-01T16:22:50Z","modified":"2024-02-19T05:29:32.213331Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:51.10002Z"},{"id":"UBUNTU-CVE-2021-32840","description":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Prior to version 1.3.3, a TAR file entry `../evil.txt` may be extracted in the parent directory of `destFolder`. This leads to arbitrary file write that may lead to code execution. The vulnerability was patched in version 1.3.3.","status":"published","published":"2022-01-26T21:15:00Z","modified":"2026-10-17T12:55:46.866585092Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","level":"high"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:27.332852Z"}]}}