CVE-2021-29653

Severity: high (CVSS 7.5 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: 2021-04-22 · updated 2026-06-17
Weakness: CWE-295

Description

HashiCorp Vault and Vault Enterprise 1.5.1 and newer, under certain circumstances, may exclude revoked but unexpired certificates from the CRL. Fixed in 1.5.8, 1.6.4, and 1.7.1.

Affected products

HashiCorp Vault: from 1.5.1 before 1.5.8; from 1.6.0 before 1.6.4; from 1.7.0 before 1.7.1 — fixed in 1.5.8, 1.6.4, 1.7.1

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.5.8, 1.6.4, 1.7.1. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2021-09-vault-s-pki-engine-crl-may-exclude-revoked-but-unexpired-certificates-after-tidy/23461/2
https://discuss.hashicorp.com/t/hcsec-2021-09-vault-s-pki-engine-crl-may-exclude-revoked-but-unexpired-certificates-after-tidy/23461/2

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