What is CVE-2025-8959?

CVE-2025-8959 is a high-severity vulnerability in Hashicorp Shared Library, classified under Improper Link Resolution Before File Access. CVSS score: 7.5/10. Published 2025-08-15.

How severe is CVE-2025-8959?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-8959 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Hashicorp Shared Library

CVE-2025-8959

HashiCorp's go-getter library subdirectory download feature is vulnerable to symlink attacks leading to unauthorized read access beyond the designated directory boundaries. This vulnerability, identified as CVE-2025-8959, is fixed in go-ge…

EPSS: 0.001 (16.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Hashicorp Shared Library — versions 0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

Public proof-of-concept exploits

redducklabs/redducklabs-runners

References

discuss.hashicorp.com/t/hcsec-2025-23-hashicorp-go-getter-vulnerable-to-arbitra…

Frequently asked questions

What is CVE-2025-8959?: CVE-2025-8959 is a high-severity vulnerability in Hashicorp Shared Library, classified under Improper Link Resolution Before File Access. CVSS score: 7.5/10. Published 2025-08-15.
How severe is CVE-2025-8959?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-8959 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.