{"id":"CVE-2026-5052","sourceIdentifier":"security@hashicorp.com","published":"2026-04-17T04:16:12.567","lastModified":"2026-10-26T21:10:00.170","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"La validación ACME del motor PKI de Vault no rechazó objetivos locales al emitir desafíos http-01 y tls-alpn-01. Esto puede llevar a que estas solicitudes sean enviadas a objetivos de red locales, lo que podría resultar en revelación de información. Corregido en Vault Community Edition 2.0.0 y Vault Enterprise 2.0.0, 1.21.5, 1.20.10 y 1.19.16."}],"affected":[{"source":"security@hashicorp.com","affectedData":[{"vendor":"HashiCorp","product":"Vault","defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault","versions":[{"version":"1.15.0","lessThan":"2.0.0","versionType":"semver","status":"affected"}]},{"vendor":"HashiCorp","product":"Vault Enterprise","defaultStatus":"unaffected","platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/vault","versions":[{"version":"1.15.0","lessThan":"2.0.0","versionType":"semver","status":"affected","changes":[{"at":"1.19.16","status":"unaffected"},{"at":"1.20.10","status":"unaffected"},{"at":"1.21.5","status":"unaffected"}]}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@hashicorp.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":4.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-17T13:19:57.168697Z","id":"CVE-2026-5052","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security@hashicorp.com","type":"Secondary","description":[{"lang":"en","value":"CWE-918"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"1.14.0","versionEndExcluding":"1.19.16","matchCriteriaId":"5EF70F5F-D939-4808-9F03-57745D1333B3"},{"vulnerable":true,"criteria":"cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*","versionStartIncluding":"1.14.0","versionEndExcluding":"2.0.0","matchCriteriaId":"64F0763E-552C-4882-A66F-D7CE8D13B7CD"},{"vulnerable":true,"criteria":"cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"1.20.0","versionEndExcluding":"1.20.10","matchCriteriaId":"E2135CCF-F6D8-41AC-8D0C-F763F63974B4"},{"vulnerable":true,"criteria":"cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"1.21.0","versionEndExcluding":"1.21.5","matchCriteriaId":"C8097BD2-0B19-4BA7-930E-93A5A89EC4AF"}]}]}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-06-vault-vulnerable-to-server-side-request-forgery-in-acme-challenge-validation-via-attacker-controlled-dns/77343","source":"security@hashicorp.com","tags":["Vendor Advisory"]}]}