# CVE-2026-88922: go-getter privilege escalation in archive decompression

Source: https://junglewise.ai/threats/cve-2026-88922-go-getter-privilege-escalation-in-archive-decompression  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-88922 · Severity: medium · CVSS 6.7 · Published 2026-09-15

go-getter is a library used by HashiCorp tools to download and extract files and archives. A flaw in its archive extraction logic allows crafted archives to create files with elevated permission bits, potentially enabling a local attacker to gain the privileges of the user performing the extraction. The risk is highest when untrusted archives are extracted by privileged users.

Vendors: [HashiCorp](https://junglewise.ai/threats/vendors/hashicorp).

## Quick answers

**Is CVE-2026-88922 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88922 being exploited in the wild.

**How severe is CVE-2026-88922?** Medium severity, with a CVSS score of 6.7, published 15 September 2026.

**Which products and versions are affected?** HashiCorp Go-Getter up to 1.8.8 and 2.2.3.

**Is there a fix for CVE-2026-88922?** A patch was published on 2026-09-15: Fixed in go-getter 1.8.9 and 2.2.4 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-88922 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-88922?** Check whether you run HashiCorp Go-Getter at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in go-getter's archive decompression handling, which applies permission metadata from archive entries without restricting them to standard read, write, and execute permissions. This allows an attacker to craft a malicious archive containing entries with elevated permission bits (such as setuid/setgid bits). When extracted by a privileged user, a local actor with access to the destination directory can exploit these elevated permissions to obtain the privileges of the extracting process. The attack requires the extraction of untrusted or attacker-controlled archives and local filesystem access to the extraction destination. The fix, available in go-getter 1.8.9 and 2.2.4, restricts extracted files to only standard permissions.

## Affected products

- HashiCorp go-getter up to 1.8.8 and 2.2.3

## Timeline

- 2026-09-15: disclosed
- 2026-09-15: patched: Fixed in go-getter 1.8.9 and 2.2.4

## References

- [https://discuss.hashicorp.com/t/hcsec-2026-39-go-getter-vulnerable-to-a-privilege-escalation-issue-in-its-archive-decompression-handling/77752](https://discuss.hashicorp.com/t/hcsec-2026-39-go-getter-vulnerable-to-a-privilege-escalation-issue-in-its-archive-decompression-handling/77752)

## Related threats

- [HashiCorp go-getter arbitrary file read via argument injection in Git URLs](https://junglewise.ai/threats/cve-2026-4660-hashicorp-go-getter-arbitrary-file-read-via-argument-injection-in)