CVE-2026-86122

Rowboat through 0.9.1 fails to validate custom MCP server and webhook URLs, allowing authenticated users to configure arbitrary destinations. Attackers can point these URLs at internal services and cloud metadata endpoints to perform server-side request forgery and enumerate internal network topology.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/rowboatlabs/rowboat
https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/lib/agents-runtime/agent-tools.ts
https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/use-cases/projects/add-custom-mcp-server.use-case.ts
https://github.com/rowboatlabs/rowboat/issues/621
https://www.vulncheck.com/advisories/rowboat-through-0.9.1-server-side-request-forgery-via-custom-mcp-server

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-05 10:16

Updated : 2026-09-10 16:18

NVD link : CVE-2026-86122

Mitre link : CVE-2026-86122

CVE.ORG link : CVE-2026-86122

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

{"id": "CVE-2026-86122", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86122", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-10T14:39:28.594338Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.1}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"repo": "https://github.com/rowboatlabs/rowboat", "vendor": "rowboatlabs", "product": "rowboat", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "0.9.1"}], "packageURL": "pkg:github/rowboatlabs/rowboat", "defaultStatus": "unaffected"}]}], "published": "2026-09-05T10:16:43.610", "references": [{"url": "https://github.com/rowboatlabs/rowboat", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/lib/agents-runtime/agent-tools.ts", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/use-cases/projects/add-custom-mcp-server.use-case.ts", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/rowboatlabs/rowboat/issues/621", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/rowboat-through-0.9.1-server-side-request-forgery-via-custom-mcp-server", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "Rowboat through 0.9.1 fails to validate custom MCP server and webhook URLs, allowing authenticated users to configure arbitrary destinations. Attackers can point these URLs at internal services and cloud metadata endpoints to perform server-side request forgery and enumerate internal network topology."}], "lastModified": "2026-09-10T16:18:01.683", "sourceIdentifier": "disclosure@vulncheck.com"}