CVE-2026-50738

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{"affected": [{"affectedData": [{"defaultStatus": "affected", "product": "pglogical", "vendor": "EnterpriseDB", "versions": [{"lessThan": "2.4.8", "status": "affected", "version": "2", "versionType": "semver"}]}], "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:enterprisedb:pglogical:*:*:*:*:*:postgresql:*:*", "matchCriteriaId": "DC0E75E2-2571-4AB8-892A-DA7B88B722EF", "versionEndExcluding": "2.4.8", "versionStartIncluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A use-after-free condition exists in pglogical's worker signaling code, where a worker structure can be dereferenced after the underlying slot has been freed or recycled during normal worker lifecycle events. The condition is reachable during normal replication operation, including by a low-privileged user able to influence worker start, stop, and restart timing through permitted pglogical operations. In the typical case the condition crashes replication workers, causing an availability impact. In the worst case a use-after-free in a PostgreSQL backend can be leveraged as a remote code execution primitive at the privilege of that backend."}, {"lang": "es", "value": "Una condici\u00f3n de uso despu\u00e9s de liberaci\u00f3n existe en el c\u00f3digo de se\u00f1alizaci\u00f3n de trabajadores de pglogical, donde una estructura de trabajador puede ser desreferenciada despu\u00e9s de que el slot subyacente haya sido liberado o reciclado durante eventos normales del ciclo de vida del trabajador. La condici\u00f3n es alcanzable durante la operaci\u00f3n normal de replicaci\u00f3n, incluso por un usuario con pocos privilegios capaz de influir en el inicio, detenci\u00f3n y reinicio de los trabajadores a trav\u00e9s de operaciones pglogical permitidas. En el caso t\u00edpico, la condici\u00f3n provoca la ca\u00edda de los trabajadores de replicaci\u00f3n, causando un impacto en la disponibilidad. En el peor de los casos, un uso despu\u00e9s de liberaci\u00f3n en un backend de PostgreSQL puede ser aprovechado como una primitiva de ejecuci\u00f3n remota de c\u00f3digo con los privilegios de ese backend."}], "id": "CVE-2026-50738", "lastModified": "2026-10-23T23:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.7, "baseSeverity": "HIGH", "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": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50738", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-28T18:44:48.974347Z", "version": "2.0.3"}}]}, "published": "2026-07-28T19:17:36.967", "references": [{"source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "tags": ["Vendor Advisory"], "url": "https://www.enterprisedb.com/docs/security/advisories/cve202650738/"}], "sourceIdentifier": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "type": "Secondary"}]}

{}

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