CVE-2026-94393

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-94393", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-09-21T13:13:54.299Z", "datePublished": "2026-09-21T13:14:00.619Z", "dateUpdated": "2026-09-21T15:18:17.855Z"}, "containers": {"cna": {"affected": [{"modules": ["app/Model/EventReport.php"], "product": "MISP", "programFiles": ["app/Model/EventReport.php"], "repo": "https://github.com/MISP/MISP", "vendor": "MISP", "versions": [{"lessThan": "2.5.47", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "remediation developer", "value": "iglocska"}, {"lang": "en", "type": "remediation developer", "value": "Claude Opus 4.8"}, {"lang": "en", "type": "reporter", "value": "David Andr\u00e9"}, {"lang": "en", "type": "reporter", "value": "Jeroen Pinoy"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<div></div><p>When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.</p><p>As a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report\u2019s UUID. Once moved, they could view and change information that they were not originally allowed to access.</p><p>The vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.</p><p>The main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP\u2019s normal access restrictions.</p><p>Version affected: &lt;2.5.47</p><div></div>"}], "value": "When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.\n\nAs a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report\u2019s UUID. Once moved, they could view and change information that they were not originally allowed to access.\n\nThe vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.\n\nThe main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP\u2019s normal access restrictions.\n\nVersion affected: <2.5.47"}], "impacts": [{"capecId": "CAPEC-174", "descriptions": [{"lang": "en", "value": "CAPEC-174 Exploiting Incorrectly Handled Edge Cases"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 6.4, "baseSeverity": "MEDIUM", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "description": "CWE-639 Authorization Bypass Through User-Controlled Key", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-284", "description": "CWE-284 Improper Access Control", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "shortName": "CIRCL", "dateUpdated": "2026-09-21T13:14:00.619Z"}, "references": [{"name": "Security patch", "tags": ["patch"], "url": "https://github.com/MISP/MISP/commit/43665b9bb"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The fix adds an ownership check in editReport: before adopting an existing report found by UUID, the code now verifies that the report's event_id matches the event being edited. If the UUID resolves to a report belonging to a different event, the operation is rejected with an error message, preventing cross-event reparenting, unauthorized read, and unauthorized overwrite of reports.</p>"}], "value": "The fix adds an ownership check in editReport: before adopting an existing report found by UUID, the code now verifies that the report's event_id matches the event being edited. If the UUID resolves to a report belonging to a different event, the operation is rejected with an error message, preventing cross-event reparenting, unauthorized read, and unauthorized overwrite of reports."}], "title": "MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport", "x_gcve": [{"extensions": {"bcp-05-x-01": {"ai_annotations": [{"ai_level": "generated", "description": "Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. 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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-94393", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-21T15:18:01.147790Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T15:18:10.327Z"}}], "cna": {"title": "MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport", "x_gcve": [{"vulnId": "GCVE-1-2026-20057", "extensions": {"bcp-05-x-01": {"ai_annotations": [{"tags": ["ai-computer-assisted:llm-generated", "ai-computer-assisted:classification"], "scope": "record", "models": [{"name": "qwen3.8:27b", "source": "ollama", "gna_source": 1, "identifier": "qwen3.8:27b"}], "ai_level": "generated", "gna_source": 1, "description": "Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. 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If the UUID resolves to a report belonging to a different event, the operation is rejected with an error message, preventing cross-event reparenting, unauthorized read, and unauthorized overwrite of reports.", "supportingMedia": [{"type": "text/html", "value": "<p>The fix adds an ownership check in editReport: before adopting an existing report found by UUID, the code now verifies that the report's event_id matches the event being edited. If the UUID resolves to a report belonging to a different event, the operation is rejected with an error message, preventing cross-event reparenting, unauthorized read, and unauthorized overwrite of reports.</p>", "base64": false}]}], "references": [{"url": "https://github.com/MISP/MISP/commit/43665b9bb", "name": "Security patch", "tags": ["patch"]}], "descriptions": [{"lang": "en", "value": "When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.\n\nAs a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report\u2019s UUID. Once moved, they could view and change information that they were not originally allowed to access.\n\nThe vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.\n\nThe main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP\u2019s normal access restrictions.\n\nVersion affected: <2.5.47", "supportingMedia": [{"type": "text/html", "value": "<div></div><p>When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.</p><p>As a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report\u2019s UUID. Once moved, they could view and change information that they were not originally allowed to access.</p><p>The vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.</p><p>The main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP\u2019s normal access restrictions.</p><p>Version affected: &lt;2.5.47</p><div></div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-639", "description": "CWE-639 Authorization Bypass Through User-Controlled Key"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control"}]}], "providerMetadata": {"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "shortName": "CIRCL", "dateUpdated": "2026-09-21T13:14:00.619Z"}}}, "cveMetadata": {"cveId": "CVE-2026-94393", "state": "PUBLISHED", "dateUpdated": "2026-09-21T15:18:17.855Z", "dateReserved": "2026-09-21T13:13:54.299Z", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "datePublished": "2026-09-21T13:14:00.619Z", "assignerShortName": "CIRCL"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"modules": ["app/Model/EventReport.php"], "product": "MISP", "programFiles": ["app/Model/EventReport.php"], "repo": "https://github.com/MISP/MISP", "vendor": "MISP", "versions": [{"lessThan": "2.5.47", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.\n\nAs a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report\u2019s UUID. Once moved, they could view and change information that they were not originally allowed to access.\n\nThe vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.\n\nThe main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP\u2019s normal access restrictions.\n\nVersion affected: <2.5.47"}], "id": "CVE-2026-94393", "lastModified": "2026-09-21T16:17:30.677", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.4, "baseSeverity": "MEDIUM", "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": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/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": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-94393", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-21T15:18:01.147790Z", "version": "2.0.3"}}]}, "published": "2026-09-21T14:17:30.500", "references": [{"source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "url": "https://github.com/MISP/MISP/commit/43665b9bb"}], "sourceIdentifier": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-639"}], "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.5.47)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "MISP", "source": "cna", "vendor": "MISP"}, "product": "misp", "vendor": "misp"}], "created": "2026-09-21T15:30:16.205186+00:00", "updated": "2026-09-21T15:30:16.427405+00:00", "vendors": ["misp", "misp$PRODUCT$misp"]}