CVE-2023-4680: Vault's Transit Secrets Engine Allowed Nonce Specified without Convergent Encryption

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-15 · updated 2026-06-17
Weakness: CWE-323

Description

HashiCorp Vault and Vault Enterprise transit secrets engine allowed authorized users to specify arbitrary nonces, even with convergent encryption disabled. The encrypt endpoint, in combination with an offline attack, could be used to decrypt arbitrary ciphertext and potentially derive the authentication subkey when using transit secrets engine without convergent encryption. Introduced in 1.6.0 and fixed in 1.14.3, 1.13.7, and 1.12.11.

Affected products

HashiCorp Vault: from 1.6.0 before 1.12.11; from 1.13.0 before 1.13.7; from 1.14.0 before 1.14.3 — fixed in 1.12.11, 1.13.7, 1.14.3

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.12.11, 1.13.7, 1.14.3. Check the vendor advisory for mitigations.

References

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