CVE-2026-84856

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:rowboatlabs:rowboat:*:*:*:*:*:*:*:*"], "modules": ["Composio Webhook Endpoint"], "product": "rowboat", "vendor": "rowboatlabs", "versions": [{"status": "affected", "version": "0.9.0"}, {"status": "affected", "version": "0.9.1"}, {"status": "unaffected", "version": "0.9.2"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in rowboatlabs rowboat up to 0.9.1. The impacted element is the function request.text/req.json of the file apps/rowboat/app/api/composio/webhook/route.ts of the component Composio Webhook Endpoint. The manipulation results in denial of service. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 0.9.2 is sufficient to resolve this issue. Upgrading the affected component is recommended. The legacy Next.js app was deleted at 0.9.2 rather than patched, leaving no security control behind."}, {"lang": "es", "value": "Una vulnerabilidad fue detectada en rowboatlabs rowboat hasta 0.9.1. El elemento afectado es la funci\u00f3n request.text/req.json del archivo apps/rowboat/app/api/composio/webhook/route.ts del componente Composio Webhook Endpoint. La manipulaci\u00f3n resulta en denegaci\u00f3n de servicio. Es posible lanzar el ataque remotamente. El exploit ahora es p\u00fablico y puede ser utilizado. La actualizaci\u00f3n a la versi\u00f3n 0.9.2 es suficiente para resolver este problema. La actualizaci\u00f3n del componente afectado es recomendada. La aplicaci\u00f3n Next.js heredada fue eliminada en 0.9.2 en lugar de parcheada, sin dejar ning\u00fan control de seguridad."}], "id": "CVE-2026-84856", "lastModified": "2026-09-28T23:10:00.143", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "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": 5.5, "baseSeverity": "MEDIUM", "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": "NONE", "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:N/UI:N/VC:N/VI:N/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": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84856", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-03T13:31:43.906524Z", "version": "2.0.3"}}]}, "published": "2026-09-02T20:17:42.563", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/hackerguopeng/cve/tree/main/Rowboat_PreAuth_Body_Buffer_DoS_Report"}, {"source": "cna@vuldb.com", "url": "https://github.com/rowboatlabs/rowboat/releases/tag/v0.9.2"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-84856"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/886260"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/398131"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/398131/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.9.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.9.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "0.9.2"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "rowboat", "source": "cna", "vendor": "rowboatlabs"}, "product": "rowboat", "vendor": "rowboatlabs"}], "created": "2026-09-03T10:00:11.117408+00:00", "updated": "2026-09-03T10:00:12.075210+00:00", "vendors": ["rowboatlabs", "rowboatlabs$PRODUCT$rowboat"]}