CVE-2021-32840

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.

• CWE-22
• CWE-22

• https://github.com/icsharpcode/SharpZipLib/commit/a0e96de70b5264f4c919b09253b1522bc7a221ccPatch, Third Party Advisory
• https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3Third Party Advisory
• https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/Exploit, Third Party Advisory
• https://github.com/icsharpcode/SharpZipLib/commit/a0e96de70b5264f4c919b09253b1522bc7a221ccPatch, Third Party Advisory
• https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3Third Party Advisory
• https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib/Exploit, Third Party Advisory

Published

Jan 26, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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