{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-10-02T04:02:18.941","vulnerabilities":[{"cve":{"id":"CVE-2026-27804","sourceIdentifier":"security-advisories@github.com","published":"2026-02-26T00:16:25.793","lastModified":"2026-06-17T10:27:42.760","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.3 and 9.1.1-alpha.4, an unauthenticated attacker can forge a Google authentication token with `alg: \"none\"` to log in as any user linked to a Google account, without knowing their credentials. All deployments with Google authentication enabled are affected. The fix in versions 8.6.3 and 9.1.1-alpha.4 hardcodes the expected `RS256` algorithm instead of trusting the JWT header, and replaces the Google adapter's custom key fetcher with `jwks-rsa` which rejects unknown key IDs. As a workaround, dsable Google authentication until upgrading is possible."},{"lang":"es","value":"Parse Server es un backend de código abierto que puede implementarse en cualquier infraestructura que pueda ejecutar Node.js. Antes de las versiones 8.6.3 y 9.1.1-alpha.4, un atacante no autenticado puede falsificar un token de autenticación de Google con 'alg: \"none\"' para iniciar sesión como cualquier usuario vinculado a una cuenta de Google, sin conocer sus credenciales. Todas las implementaciones con autenticación de Google habilitada se ven afectadas. La corrección en las versiones 8.6.3 y 9.1.1-alpha.4 codifica de forma rígida el algoritmo 'RS256' esperado en lugar de confiar en el encabezado JWT, y reemplaza el recuperador de claves personalizado del adaptador de Google con 'jwks-rsa' que rechaza los ID de clave desconocidos. Como solución alternativa, deshabilite la autenticación de Google hasta que sea posible la actualización."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":">= 9.0.0, < 9.3.1-alpha.4","status":"affected"},{"version":"< 8.6.3","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-02-26T17:03:17.987949Z","id":"CVE-2026-27804","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-327"},{"lang":"en","value":"CWE-345"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*","versionEndExcluding":"8.6.3","matchCriteriaId":"6013714D-C959-4E21-90BC-38DB536DDD7A"},{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*","versionStartIncluding":"9.0.0","versionEndExcluding":"9.3.1","matchCriteriaId":"6DF6F6EE-4C02-49CB-9B73-D8C2A567DC5A"},{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:9.3.1:alpha1:*:*:*:node.js:*:*","matchCriteriaId":"DF17F1D3-1FF0-4F19-AF82-A8866CE625D3"},{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:9.3.1:alpha2:*:*:*:node.js:*:*","matchCriteriaId":"98AB1B71-E3FD-457A-AA25-074E2F5A0581"},{"vulnerable":true,"criteria":"cpe:2.3:a:parseplatform:parse-server:9.3.1:alpha3:*:*:*:node.js:*:*","matchCriteriaId":"C73893F8-315F-4FE3-9ADB-DD2965797C46"}]}]}],"references":[{"url":"https://github.com/parse-community/parse-server/commit/9b94083accb7f3e72c6b8126c195c7a03dd2dfd7","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/parse-community/parse-server/commit/9d5942d50e55c822924c27b05aa98f1393e7a330","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/parse-community/parse-server/releases/tag/8.6.3","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/parse-community/parse-server/releases/tag/9.3.1-alpha.4","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-4q3h-vp4r-prv2","source":"security-advisories@github.com","tags":["Patch","Vendor Advisory"]}]}}]}