What’s Vulnerable › Vulnerabilities

CVE-2020-29529

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-03 · updated 2026-06-17
• Weakness: CWE-22

Description

HashiCorp go-slug up to 0.4.3 did not fully protect against directory traversal while unpacking tar archives, and protections could be bypassed with specific constructions of multiple symlinks. Fixed in 0.5.0.

Affected products

• HashiCorp go-slug: before 0.5.0 — fixed in 0.5.0

How to fix

Upgrade to a fixed version: HashiCorp go-slug 0.5.0. Check the vendor advisory for mitigations.

References

• https://github.com/hashicorp/go-slug/compare/v0.4.3...v0.5.0
• https://github.com/hashicorp/go-slug/pull/12
• https://github.com/hashicorp/go-slug/releases/tag/v0.5.0
• https://securitylab.github.com/advisories/GHSL-2020-262-zipslip-go-slug
• https://github.com/hashicorp/go-slug/compare/v0.4.3...v0.5.0
• https://github.com/hashicorp/go-slug/pull/12
• https://github.com/hashicorp/go-slug/releases/tag/v0.5.0
• https://securitylab.github.com/advisories/GHSL-2020-262-zipslip-go-slug

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