CVE-2026-55769

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{"affected": [{"affectedData": [{"product": "cloudnative-pg", "vendor": "cloudnative-pg", "versions": [{"status": "affected", "version": "< 1.28.4"}, {"status": "affected", "version": ">= 1.29.0, < 1.29.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG opened superuser connections without pinning search_path in fillDefaultParameters in pkg/management/postgres/pool/profiles.go. A role holding DATABASE OWNER could create overloaded built-in operators in the public schema and change the database or role search_path, causing instance-manager introspection queries such as SELECT COUNT(*) > 0 FROM pg_catalog.pg_extension WHERE extname = $1 to execute attacker-controlled functions as the postgres superuser. The same trust issue affected direct sql.Open(\"pgx\", ...) callsites and the public.user_search SECURITY DEFINER function, enabling PostgreSQL superuser access, operating system command execution through COPY ... FROM PROGRAM, and access to the pod ServiceAccount token. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0."}, {"lang": "es", "value": "CloudNativePG es una plataforma dise\u00f1ada para gestionar bases de datos PostgreSQL dentro de entornos de Kubernetes. Antes de las versiones 1.28.4 y 1.29.2, CloudNativePG abr\u00eda conexiones de superusuario sin fijar el search_path en fillDefaultParameters en pkg/management/postgres/pool/profiles.go. Un rol con el permiso DATABASE OWNER pod\u00eda crear operadores incorporados sobrecargados en el esquema p\u00fablico y cambiar el search_path de la base de datos o del rol, lo que provocaba que las consultas de introspecci\u00f3n del gestor de instancias, como SELECT COUNT(*) > 0 FROM pg_catalog.pg_extension WHERE extname = $1, ejecutaran funciones controladas por el atacante como el superusuario de postgres. El mismo problema de confianza afectaba a las llamadas directas a sql.Open(\u2019pgx\u2019, ...) y a la funci\u00f3n public.user_search SECURITY DEFINER, lo que permit\u00eda el acceso de superusuario de PostgreSQL, la ejecuci\u00f3n de comandos del sistema operativo a trav\u00e9s de COPY ... FROM PROGRAM y el acceso al token de ServiceAccount del pod. Este problema est\u00e1 solucionado en las versiones 1.28.4, 1.29.2 y 1.30.0."}], "id": "CVE-2026-55769", "lastModified": "2026-10-26T10:10:00.140", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55769", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-21T11:20:03.067773Z", "version": "2.0.3"}}]}, "published": "2026-08-20T22:17:22.640", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/02b5c6289b7609dc87fcb1ae9c113160e3d43308"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/db38f4d80315c8f1b21bf511ef0f28871820c14d"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/e0e2d53adbd907a61f583b1431904b5969f3fd22"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10774"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-x8c2-3p4r-v9r6"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-x8c2-3p4r-v9r6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-426"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.28.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.29.0,1.29.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "cloudnative-pg", "source": "cna", "vendor": "cloudnative-pg"}, "product": "cloudnative-pg", "vendor": "cloudnative-pg"}], "created": "2026-08-21T01:15:07.273447+00:00", "updated": "2026-08-21T01:30:05.629733+00:00", "vendors": ["cloudnative-pg", "cloudnative-pg$PRODUCT$cloudnative-pg"]}