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.
| Vendor | Product | Versions |
|---|---|---|
| hashi | vault | 1.15.0, 1.15.0 |
Updated severity to CRITICAL, marked exploit availability as false, and added CVE-2026-5052 tag.
Initial creation
