CVE-2021-41802

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-08 · updated 2026-06-17
Weakness: CWE-732

Description

HashiCorp Vault and Vault Enterprise through 1.7.4 and 1.8.3 allowed a user with write permission to an entity alias ID sharing a mount accessor with another user to acquire this other user’s policies by merging their identities. Fixed in Vault and Vault Enterprise 1.7.5 and 1.8.4.

Affected products

HashiCorp Vault: before 1.7.5; from 1.8.0 before 1.8.4 — fixed in 1.7.5, 1.8.4

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.7.5, 1.8.4. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2021-27-vault-merging-multiple-entity-aliases-for-the-same-mount-may-allow-privilege-escalation/
https://security.gentoo.org/glsa/202207-01
https://discuss.hashicorp.com/t/hcsec-2021-27-vault-merging-multiple-entity-aliases-for-the-same-mount-may-allow-privilege-escalation/
https://security.gentoo.org/glsa/202207-01

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