medium5.3
CVE-2026-5052
Vault’s PKI engine’s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/hashicorp/vault | >= 1.14.0, <= 1.21.4 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Hashicorp | Vault | from 1.14.0 before 1.19.16 from 1.14.0 before 2.0.0 from 1.20.0 before 1.20.10 from 1.21.0 before 1.21.5 |