Security Bulletin
Summary
The go-getter library up to versions 1.8.8 and 2.2.3 is vulnerable to a privilege escalation issue in its archive decompression handling that may allow a crafted archive to cause extracted files to be created with elevated permission bits. Where extraction is performed by a privileged user, this may allow a local actor to obtain the privileges of the extracting process. This vulnerability (CVE-2026-88922) is fixed in go-getter 1.8.9 and 2.2.4.
Vulnerability Details
CVEID: CVE-2026-88922
DESCRIPTION: Go-getter applied the permission metadata recorded in archive entries to the files it extracted, without restricting that metadata to standard read, write, and execute permissions. An archive from an untrusted or attacker influenced source could therefore cause files to be created with elevated permission bits, which a local actor with access to the destination path may be able to use to obtain the privileges of the account that performed the extraction. Applications that extract only trusted archives, or that extract as an unprivileged user into a destination other local users cannot reach, are not meaningfully exposed.
CWE: CWE-281: Improper Preservation of Permissions
CVSS Source: HashiCorp Inc.
CVSS Base score: 6.7
CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Shared library Community Edition | affected from 1.0.1 up to 2.2.4, unaffected from 1.8.9 |
| Shared library Enterprise | N/A |
Remediation/Fixes
Customers should evaluate the risk associated with this issue and consider upgrading to go-getter 1.8.9 or 2.2.4. Following the upgrade, files extracted from archives retain only standard read, write, and execute permissions, so applications that relied on archives supplying additional permission bits will observe a change in behavior.
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References
Acknowledgement
This issue was reported to HashiCorp by Kris Kennaway.
Change History
15 Sep 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
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Document Location
Worldwide
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Document Information
Modified date:
15 September 2026
Initial Publish date:
15 September 2026
UID
ibm17287673