{"id":"EUVD-2026-23344","enisaUuid":"242f7d86-a01e-3eb3-8791-879469f3e571","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.","datePublished":"Apr 17, 2026, 2:55:25 AM","dateUpdated":"Apr 17, 2026, 5:57:55 PM","baseScore":5.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","references":"https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343\n","aliases":"CVE-2026-5052\nGHSA-8r5m-3f66-qpr3\n","assigner":"HashiCorp","epss":0.35,"enisaIdProduct":[{"id":"c6c8bdfc-a57d-3c99-9535-e4268fb79c80","product":{"name":"Vault Enterprise","vendor":{"name":"Hashicorp"}},"product_version":"1.15.0 \u003c2.0.0"},{"id":"fe061cd2-f078-376a-ac80-7b36aaa4664e","product":{"name":"Vault","vendor":{"name":"Hashicorp"}},"product_version":"1.15.0 \u003c2.0.0"}],"enisaIdVendor":[{"id":"9d4b0f1f-2491-3e92-a8b9-cb1ce9a1e6e8","vendor":{"name":"Hashicorp"}}],"enisaIdVulnerability":[{"id":"06cfcc99-28c3-3bd3-8ad0-271389dfa53a","vulnerability":{"id":"GHSA-8r5m-3f66-qpr3","description":"HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS","datePublished":"Apr 17, 2026, 6:31:07 AM","dateUpdated":"Jul 21, 2026, 1:57:05 PM","baseScore":0.0,"references":"https://nvd.nist.gov/vuln/detail/CVE-2026-5052\nhttps://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343\nhttps://github.com/advisories/GHSA-8r5m-3f66-qpr3\nhttps://github.com/hashicorp/vault\n","enisa_id":"EUVD-2026-23344\n","aliases":"CVE-2026-5052\nGHSA-8r5m-3f66-qpr3\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:55:10 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"b066a1a1-dca3-3194-bbec-0cf59182bd14","vulnerability":{"id":"CVE-2026-5052","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.","datePublished":"Apr 17, 2026, 2:55:25 AM","dateUpdated":"Apr 17, 2026, 5:57:55 PM","status":"PUBLISHED","baseScore":5.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","references":"https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343\n","enisa_id":"EUVD-2026-23344\n","assigner":"HashiCorp","epss":0.35,"dataProcessed":"Oct 28, 2026, 7:16:39 AM","vulnerabilityProduct":[{"id":"2ab9da9b-5b8c-375e-b8fb-6dfba8d4e392","product":{"name":"Vault Enterprise","vendor":{"name":"Hashicorp"}},"product_version":"1.15.0 \u003c2.0.0"},{"id":"8211dbde-44f3-3b0f-bc57-54cda67adeca","product":{"name":"Vault","vendor":{"name":"Hashicorp"}},"product_version":"1.15.0 \u003c2.0.0"}],"vulnerabilityVendor":[{"id":"a4f12173-191b-3599-8f71-9d7d9a55228b","vendor":{"name":"Hashicorp"}}]}}],"enisaIdAdvisory":[]}