Vulnerability-Lookup

CVE-2026-86122 (GCVE-0-2026-86122)

Vulnerability from cvelistv5 – Published: 2026-09-05 09:59 – Updated: 2026-09-05 09:59

Title

Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server

Summary

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.

Severity

5.3 (Medium)


                        
                          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

5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/rowboatlabs/rowboat/issues/621	issue-tracking
https://github.com/rowboatlabs/rowboat/blob/v0.9.…	technical-description
https://github.com/rowboatlabs/rowboat/blob/v0.9.…	technical-description
https://github.com/rowboatlabs/rowboat	product
https://www.vulncheck.com/advisories/rowboat-thro…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
rowboatlabs	rowboat	Affected: 0 , ≤ 0.9.1 (semver)	guessed

Date Public

2026-06-13 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/rowboatlabs/rowboat",
          "product": "rowboat",
          "repo": "https://github.com/rowboatlabs/rowboat",
          "vendor": "rowboatlabs",
          "versions": [
            {
              "lessThanOrEqual": "0.9.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-06-13T00:00:00.000Z",
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-05T09:59:10.757Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #621",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/rowboatlabs/rowboat/issues/621"
        },
        {
          "name": "validateHttpHttpsUrl scheme-only check",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/use-cases/projects/add-custom-mcp-server.use-case.ts"
        },
        {
          "name": "Unvalidated webhook fetch and MCP client connect",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/lib/agents-runtime/agent-tools.ts"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/rowboatlabs/rowboat"
        },
        {
          "name": "VulnCheck Advisory: Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/rowboat-through-0.9.1-server-side-request-forgery-via-custom-mcp-server"
        }
      ],
      "title": "Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-86122",
    "datePublished": "2026-09-05T09:59:10.757Z",
    "dateReserved": "2026-09-05T01:59:23.139Z",
    "dateUpdated": "2026-09-05T09:59:10.757Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-86122\",\"sourceIdentifier\":\"disclosure@vulncheck.com\",\"published\":\"2026-09-05T10:16:43.610\",\"lastModified\":\"2026-09-05T10:16:43.610\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"disclosure@vulncheck.com\",\"affectedData\":[{\"vendor\":\"rowboatlabs\",\"product\":\"rowboat\",\"defaultStatus\":\"unaffected\",\"repo\":\"https://github.com/rowboatlabs/rowboat\",\"packageURL\":\"pkg:github/rowboatlabs/rowboat\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"0.9.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"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\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"LOW\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N\",\"baseScore\":5.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.1,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"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\"}]}}"
  }
}

FKIE_CVE-2026-86122

Vulnerability from fkie_nvd - Published: 2026-09-05 10:16 - Updated: 2026-09-05 10:16

Severity

5.0 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Summary

References

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

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/rowboatlabs/rowboat",
          "product": "rowboat",
          "repo": "https://github.com/rowboatlabs/rowboat",
          "vendor": "rowboatlabs",
          "versions": [
            {
              "lessThanOrEqual": "0.9.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-86122",
  "lastModified": "2026-09-05T10:16:43.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 1.4,
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "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": "LOW",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-05T10:16:43.610",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "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"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Primary"
    }
  ]
}

GHSA-JMXM-QMRF-XRPP

Vulnerability from github – Published: 2026-09-05 12:31 – Updated: 2026-09-05 12:31

Details

Severity

5.0 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

5.3 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-86122"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-05T10:16:43Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-jmxm-qmrf-xrpp",
  "modified": "2026-09-05T12:31:26Z",
  "published": "2026-09-05T12:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86122"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rowboatlabs/rowboat/issues/621"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rowboatlabs/rowboat"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/lib/agents-runtime/agent-tools.ts"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rowboatlabs/rowboat/blob/v0.9.1/apps/rowboat/src/application/use-cases/projects/add-custom-mcp-server.use-case.ts"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/rowboat-through-0.9.1-server-side-request-forgery-via-custom-mcp-server"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-86122 (GCVE-0-2026-86122)

FKIE_CVE-2026-86122

GHSA-JMXM-QMRF-XRPP

Tags

Sightings

Nomenclature