CVE-2026-5052 — Server-Side Request Forgery in Vault

CWE-918 — Server-Side Request Forgery4 documents4 sources
Severity
5.3MEDIUMNVD
EPSS
0.0%
top 99.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
11
Hashicorp VaultHashicorp Vault EnterpriseGithub.com Hashicorp Vault+8 more
Timeline
PublishedApr 17

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages11 packages

▶CVEListV5hashicorp/vault_enterprise1.15.0 — 2.0.0
▶CVEListV5hashicorp/vault1.15.0 — 2.0.0
▶Gogithub.com/hashicorp_vault1.14.0 — 1.21.4

🔴Vulnerability Details

1
GHSA
HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS↗2026-04-17
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📋Vendor Advisories

1
Red Hat
Vault: Vault: Information disclosure via Server-Side Request Forgery in ACME challenge validation↗2026-04-17
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💬Community

1
Bugzilla
CVE-2026-5052 Vault: Vault: Information disclosure via Server-Side Request Forgery in ACME challenge validation↗2026-04-17
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