CVE-2020-35453

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-17 · updated 2026-06-17

Description

HashiCorp Vault Enterprise’s Sentinel EGP policy feature incorrectly allowed requests to be processed in parent and sibling namespaces. Fixed in 1.5.6 and 1.6.1.

Affected products

HashiCorp Vault: from 1.5.0 before 1.5.6; from 1.6.0 before 1.6.1 — fixed in 1.5.6, 1.6.1

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.5.6, 1.6.1. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2020-24-vault-enterprise-s-sentinel-egp-policies-may-impact-parent-or-sibling-namespaces/18983
https://github.com/hashicorp/vault/blob/master/CHANGELOG.md#161
https://discuss.hashicorp.com/t/hcsec-2020-24-vault-enterprise-s-sentinel-egp-policies-may-impact-parent-or-sibling-namespaces/18983
https://github.com/hashicorp/vault/blob/master/CHANGELOG.md#161

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