CVE-2026-86271

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86271", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-06T12:51:03.719Z", "datePublished": "2026-09-07T04:30:11.124Z", "dateUpdated": "2026-09-09T14:14:47.102Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-07T04:30:11.124Z"}, "title": "FluentCMS PermissionManager.cs GetAccessible authorization", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-862", "lang": "en", "description": "Missing Authorization"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-863", "lang": "en", "description": "Incorrect Authorization"}]}], "affected": [{"vendor": "n/a", "product": "FluentCMS", "versions": [{"version": "0.0.1", "status": "affected"}, {"version": "0.0.2", "status": "affected"}, {"version": "0.0.3", "status": "affected"}, {"version": "0.0.4", "status": "affected"}, {"version": "0.0.5", "status": "affected"}], "cpes": ["cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was found in FluentCMS up to 0.0.5. This affects the function GetAccessible of the file src/Backend/FluentCMS.Services/Permissions/PermissionManager.cs. Performing a manipulation results in missing authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.7, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.7, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 5.8, "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-09-06T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-09-06T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-09-06T14:56:08.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "volksec (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/399430", "name": "VDB-399430 | FluentCMS PermissionManager.cs GetAccessible authorization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/399430/cti", "name": "VDB-399430 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-86271", "name": "CVE-2026-86271 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/904824", "name": "Submit #904824 | FluentCMS 0.0.5 improper authorization", "tags": ["third-party-advisory"]}, {"url": "https://github.com/fluentcms/FluentCMS/issues/2409", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/fluentcms/FluentCMS/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202609"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-09T14:14:35.198073Z", "id": "CVE-2026-86271", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-09T14:14:47.102Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-86271", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-09T14:14:35.198073Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-09T14:14:41.595Z"}}], "cna": {"title": "FluentCMS PermissionManager.cs GetAccessible authorization", "credits": [{"lang": "en", "type": "reporter", "value": "volksec (VulDB User)"}, {"lang": "en", "type": "coordinator", "value": "VulDB CNA Team"}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.1, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.7, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.7, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 5.8, "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "affected": [{"cpes": ["cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*"], "vendor": "n/a", "product": "FluentCMS", "versions": [{"status": "affected", "version": "0.0.1"}, {"status": "affected", "version": "0.0.2"}, {"status": "affected", "version": "0.0.3"}, {"status": "affected", "version": "0.0.4"}, {"status": "affected", "version": "0.0.5"}]}], "timeline": [{"lang": "en", "time": "2026-09-06T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-09-06T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-09-06T14:56:08.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/399430", "name": "VDB-399430 | FluentCMS PermissionManager.cs GetAccessible authorization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/399430/cti", "name": "VDB-399430 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-86271", "name": "CVE-2026-86271 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/904824", "name": "Submit #904824 | FluentCMS 0.0.5 improper authorization", "tags": ["third-party-advisory"]}, {"url": "https://github.com/fluentcms/FluentCMS/issues/2409", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/fluentcms/FluentCMS/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202609"], "descriptions": [{"lang": "en", "value": "A vulnerability was found in FluentCMS up to 0.0.5. This affects the function GetAccessible of the file src/Backend/FluentCMS.Services/Permissions/PermissionManager.cs. Performing a manipulation results in missing authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "Missing Authorization"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "Incorrect Authorization"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-07T04:30:11.124Z"}}}, "cveMetadata": {"cveId": "CVE-2026-86271", "state": "PUBLISHED", "dateUpdated": "2026-09-09T14:14:47.102Z", "dateReserved": "2026-09-06T12:51:03.719Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-09-07T04:30:11.124Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*"], "product": "FluentCMS", "vendor": "n/a", "versions": [{"status": "affected", "version": "0.0.1"}, {"status": "affected", "version": "0.0.2"}, {"status": "affected", "version": "0.0.3"}, {"status": "affected", "version": "0.0.4"}, {"status": "affected", "version": "0.0.5"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in FluentCMS up to 0.0.5. This affects the function GetAccessible of the file src/Backend/FluentCMS.Services/Permissions/PermissionManager.cs. Performing a manipulation results in missing authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet."}], "id": "CVE-2026-86271", "lastModified": "2026-09-09T15:17:15.700", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "MULTIPLE", "availabilityImpact": "PARTIAL", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 6.4, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.0, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "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": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86271", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-09T14:14:35.198073Z", "version": "2.0.3"}}]}, "published": "2026-09-07T05:16:55.210", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/fluentcms/FluentCMS/"}, {"source": "cna@vuldb.com", "url": "https://github.com/fluentcms/FluentCMS/issues/2409"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-86271"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/904824"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/399430"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/399430/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}, {"lang": "en", "value": "CWE-863"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.0.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.0.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.0.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.0.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.0.5"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "FluentCMS", "source": "cna", "vendor": "n/a"}, "product": "fluentcms", "vendor": "fluentcms"}], "created": "2026-09-07T06:30:17.187931+00:00", "updated": "2026-09-07T07:00:09.439358+00:00", "vendors": ["fluentcms", "fluentcms$PRODUCT$fluentcms"]}