CVE-2026-50737

{"id": "CVE-2026-50737", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50737", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-28T18:48:38.115237Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}], "cvssMetricV40": [{"type": "Secondary", "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "affectedData": [{"vendor": "EnterpriseDB", "product": "pglogical", "versions": [{"status": "affected", "version": "2", "lessThan": "2.4.8", "versionType": "semver"}], "defaultStatus": "affected"}]}], "published": "2026-07-28T19:17:36.827", "references": [{"url": "https://www.enterprisedb.com/docs/security/advisories/cve202650737/", "tags": ["Vendor Advisory"], "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "description": [{"lang": "en", "value": "CWE-250"}]}], "descriptions": [{"lang": "en", "value": "When applying replicated changes for a row that is missing one or more columns, pglogical evaluates the affected table's default expressions on the subscriber. Because the apply worker runs at a privilege level equivalent to a PostgreSQL superuser in default installations, any function invoked by such a default expression also runs at that privilege. A party acting as the publisher can use this path to cause functions to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser.\n\nThis is a second, independent path to the same superuser escalation tracked under CVE-2026-50736 (the pglogical queue issue). To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles."}, {"lang": "es", "value": "Al aplicar cambios replicados para una fila a la que le faltan una o m\u00e1s columnas, pglogical eval\u00faa las expresiones predeterminadas de la tabla afectada en el suscriptor. Debido a que el trabajador de aplicaci\u00f3n se ejecuta con un nivel de privilegio equivalente al de un superusuario de PostgreSQL en instalaciones predeterminadas, cualquier funci\u00f3n invocada por dicha expresi\u00f3n predeterminada tambi\u00e9n se ejecuta con ese privilegio. Una parte que act\u00faa como publicador puede usar esta ruta para hacer que las funciones se ejecuten en el suscriptor como superusuario, escalando de un rol permitido para usar pglogical a superusuario completo.\n\nEsta es una segunda ruta independiente a la misma escalada de superusuario rastreada bajo CVE-2026-50736 (el problema de la cola de pglogical). Para explotar el problema, un atacante debe poder dirigir una suscripci\u00f3n a un punto final que controlan. En instalaciones predeterminadas, esto requiere privilegios normalmente reservados para un superusuario, por lo que el problema es m\u00e1s relevante para implementaciones gestionadas donde la capacidad de crear suscripciones ha sido delegada a roles que no son de superusuario."}], "lastModified": "2026-10-23T23:10:00.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:enterprisedb:pglogical:*:*:*:*:*:postgresql:*:*", "vulnerable": true, "matchCriteriaId": "DC0E75E2-2571-4AB8-892A-DA7B88B722EF", "versionEndExcluding": "2.4.8", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "20be33e2-bf35-4d13-8fad-18bd2f3e3659"}