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HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS

🗓️ 17 Apr 2026 06:31:07Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 3 Views

Vault PKI ACME validation could target local hosts via attacker controlled domain in http-01 and tls-alpn-01.

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18 Apr 2026 00:53Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.15.3 - 8.6
EPSS0.00021
SSVC
3