CVE-2026-7818

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-7818", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-05-04T21:26:59.607Z", "datePublished": "2026-05-11T14:35:52.092Z", "dateUpdated": "2026-05-11T16:07:11.650Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-05-11T14:35:52.092Z"}, "title": "pgAdmin 4: Unsafe deserialization (CWE-502) in file-backed session manager leads to remote code execution", "datePublic": "2026-05-11T10:30:00.000Z", "affected": [{"vendor": "pgadmin.org", "product": "pgAdmin 4", "repo": "https://github.com/pgadmin-org/pgadmin4", "modules": ["Session Manager"], "programFiles": ["https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/session.py"], "versions": [{"status": "affected", "version": "0", "lessThan": "9.15", "versionType": "custom"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "Deserialization of untrusted data (CWE-502) in pgAdmin 4 FileBackedSessionManager.\n\nThe session manager performed unsafe deserialization of session-file contents (using Python's standard object-serialization module) before performing any HMAC integrity check. Any file dropped into the sessions directory was deserialized unconditionally. An authenticated user with write access to the sessions directory (whether by misconfiguration or in combination with another path-traversal flaw) could plant a crafted serialized payload to achieve operating-system level remote code execution under the pgAdmin process identity.\n\nFix prepends a 64-byte hex SHA-256 HMAC over the session body, computed with SECRET_KEY, and verifies it via hmac.compare_digest before any deserialization. The check is raised (rather than asserted) on empty SECRET_KEY so it is not stripped under -O.\n\nThis issue affects pgAdmin 4: before 9.15."}], "references": [{"url": "https://github.com/pgadmin-org/pgadmin4/issues/9901", "tags": ["issue-tracking"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "Authenticated pgAdmin user with prior write access to the sessions directory. Standalone exploitation requires this unusual prerequisite (sessions directory is normally writable only by the pgAdmin process). AV:L and AC:H reflect the chain dependency for non-local exploitation. S:U reflects that RCE in the pgAdmin process is the same security authority as the application itself."}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "Authenticated pgAdmin user with prior write access to the sessions directory. Standalone exploitation requires this unusual prerequisite (sessions directory is normally writable only by the pgAdmin process). AV:L and AC:H reflect the chain dependency for non-local exploitation. S:U reflects that RCE in the pgAdmin process is the same security authority as the application itself."}], "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "baseScore": 7.3, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Fernando Bortotti"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-502", "lang": "en", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-11T16:07:07.654126Z", "id": "CVE-2026-7818", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-11T16:07:11.650Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-7818", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-05-04T21:26:59.607Z", "datePublished": "2026-05-11T14:35:52.092Z", "dateUpdated": "2026-05-11T16:07:11.650Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-05-11T14:35:52.092Z"}, "title": "pgAdmin 4: Unsafe deserialization (CWE-502) in file-backed session manager leads to remote code execution", "datePublic": "2026-05-11T10:30:00.000Z", "affected": [{"vendor": "pgadmin.org", "product": "pgAdmin 4", "repo": "https://github.com/pgadmin-org/pgadmin4", "modules": ["Session Manager"], "programFiles": ["https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/session.py"], "versions": [{"status": "affected", "version": "0", "lessThan": "9.15", "versionType": "custom"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "Deserialization of untrusted data (CWE-502) in pgAdmin 4 FileBackedSessionManager.\n\nThe session manager performed unsafe deserialization of session-file contents (using Python's standard object-serialization module) before performing any HMAC integrity check. Any file dropped into the sessions directory was deserialized unconditionally. An authenticated user with write access to the sessions directory (whether by misconfiguration or in combination with another path-traversal flaw) could plant a crafted serialized payload to achieve operating-system level remote code execution under the pgAdmin process identity.\n\nFix prepends a 64-byte hex SHA-256 HMAC over the session body, computed with SECRET_KEY, and verifies it via hmac.compare_digest before any deserialization. The check is raised (rather than asserted) on empty SECRET_KEY so it is not stripped under -O.\n\nThis issue affects pgAdmin 4: before 9.15."}], "references": [{"url": "https://github.com/pgadmin-org/pgadmin4/issues/9901", "tags": ["issue-tracking"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "Authenticated pgAdmin user with prior write access to the sessions directory. Standalone exploitation requires this unusual prerequisite (sessions directory is normally writable only by the pgAdmin process). AV:L and AC:H reflect the chain dependency for non-local exploitation. S:U reflects that RCE in the pgAdmin process is the same security authority as the application itself."}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "Authenticated pgAdmin user with prior write access to the sessions directory. Standalone exploitation requires this unusual prerequisite (sessions directory is normally writable only by the pgAdmin process). AV:L and AC:H reflect the chain dependency for non-local exploitation. S:U reflects that RCE in the pgAdmin process is the same security authority as the application itself."}], "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "baseScore": 7.3, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Fernando Bortotti"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-7818", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-11T16:07:07.654126Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-11T16:07:01.350Z"}}]}}

{"affected": [{"affectedData": [{"defaultStatus": "affected", "modules": ["Session Manager"], "product": "pgAdmin 4", "programFiles": ["https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/session.py"], "repo": "https://github.com/pgadmin-org/pgadmin4", "vendor": "pgadmin.org", "versions": [{"lessThan": "9.15", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pgadmin:pgadmin_4:*:*:*:*:*:postgresql:*:*", "matchCriteriaId": "E4868FB7-72D2-466C-B535-DD5CF92A8D5F", "versionEndExcluding": "9.15", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of untrusted data (CWE-502) in pgAdmin 4 FileBackedSessionManager.\n\nThe session manager performed unsafe deserialization of session-file contents (using Python's standard object-serialization module) before performing any HMAC integrity check. Any file dropped into the sessions directory was deserialized unconditionally. An authenticated user with write access to the sessions directory (whether by misconfiguration or in combination with another path-traversal flaw) could plant a crafted serialized payload to achieve operating-system level remote code execution under the pgAdmin process identity.\n\nFix prepends a 64-byte hex SHA-256 HMAC over the session body, computed with SECRET_KEY, and verifies it via hmac.compare_digest before any deserialization. The check is raised (rather than asserted) on empty SECRET_KEY so it is not stripped under -O.\n\nThis issue affects pgAdmin 4: before 9.15."}, {"lang": "es", "value": "Deserializaci\u00f3n de datos no confiables (CWE-502) en pgAdmin 4 FileBackedSessionManager.\n\nEl gestor de sesiones realiz\u00f3 una deserializaci\u00f3n insegura del contenido del archivo de sesi\u00f3n (utilizando el m\u00f3dulo est\u00e1ndar de serializaci\u00f3n de objetos de Python) antes de realizar cualquier verificaci\u00f3n de integridad HMAC. Cualquier archivo depositado en el directorio de sesiones fue deserializado incondicionalmente. Un usuario autenticado con acceso de escritura al directorio de sesiones (ya sea por una mala configuraci\u00f3n o en combinaci\u00f3n con otra falla de path-traversal) podr\u00eda insertar una carga \u00fatil serializada maliciosa para lograr la ejecuci\u00f3n remota de c\u00f3digo a nivel del sistema operativo bajo la identidad del proceso de pgAdmin.\n\nLa soluci\u00f3n antepone un HMAC SHA-256 hexadecimal de 64 bytes sobre el cuerpo de la sesi\u00f3n, calculado con SECRET_KEY, y lo verifica a trav\u00e9s de hmac.compare_digest antes de cualquier deserializaci\u00f3n. La verificaci\u00f3n se eleva (en lugar de afirmarse) en caso de SECRET_KEY vac\u00edo para que no se elimine bajo -O.\n\nEste problema afecta a pgAdmin 4: antes de la versi\u00f3n 9.15."}], "id": "CVE-2026-7818", "lastModified": "2026-10-26T18:10:00.173", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.3, "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:L/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": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7818", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-11T16:07:07.654126Z", "version": "2.0.3"}}]}, "published": "2026-05-11T16:17:38.847", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://github.com/pgadmin-org/pgadmin4/issues/9901"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,9.15)"}}], "enrichment": {"confidence": 89.0, "confidence_source": "matching", "scores": [{"score": 89.0, "source": "matching"}]}, "original": {"product": "pgAdmin 4", "source": "cna", "vendor": "pgadmin.org"}, "product": "pgadmin_4", "vendor": "pgadmin"}], "created": "2026-05-11T17:00:15.797029+00:00", "updated": "2026-05-12T09:00:06.435713+00:00", "vendors": ["pgadmin", "pgadmin$PRODUCT$pgadmin_4"], "weaknesses": ["CWE-502"]}