# CVE-2026-5052

> Vulnerability · severity: **MEDIUM** (CVSS 5.3).

## Description

Vault’s PKI engine’s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges. This may lead to these requests being sent to local network targets, potentially leading to information disclosure. Fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16.

## Key facts

- **CVE ID:** CVE-2026-5052
- **Published:** 2026-04-17
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.3
- **CWE codes:** CWE-918

## Affected products

- `hashicorp:vault`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5052

## Citation

> AI Analytics. CVE-2026-5052. Retrieved 2026-07-15 from https://api.ai-analytics.org/cve/CVE-2026-5052. Derived from NIST NVD. Licensed CC0.

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