{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-105689",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-05T17:48:58.626Z",
        "datePublished": "2026-10-05T19:51:04.208Z",
        "dateUpdated": "2026-10-08T02:23:53.207Z"
    },
    "containers": {
        "cna": {
            "title": "Penpot: SSRF guard bypass via IPv6 transition addresses (NAT64/6to4/Teredo) in webhook delivery and media download",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/penpot/penpot/security/advisories/GHSA-wxgm-8qjw-x445",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/penpot/penpot/security/advisories/GHSA-wxgm-8qjw-x445"
                },
                {
                    "name": "https://github.com/penpot/penpot/commit/326d83e780ae120b45ccd6f3d7bd24922b54461c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/penpot/penpot/commit/326d83e780ae120b45ccd6f3d7bd24922b54461c"
                },
                {
                    "name": "https://github.com/penpot/penpot/releases/tag/2.18.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/penpot/penpot/releases/tag/2.18.0"
                }
            ],
            "affected": [
                {
                    "vendor": "penpot",
                    "product": "penpot",
                    "versions": [
                        {
                            "version": "< 2.18.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-05T19:51:04.208Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Penpot is an open-source design and prototyping platform. Prior to 2.18.0, app.util.ssrf/blocked-address? relies on Java InetAddress predicates that do not classify NAT64, 6to4, or Teredo addresses and applies additional CIDR checks only to IPv4 values. Exploitation requires routing through a NAT64 gateway or an attacker-controlled DNS AAAA record; cloud environments with NAT64 gateways are directly exploitable. A user controlling a media import URL, or an administrator controlling a webhook URL, can then supply an IPv6 transition address that embeds a cloud-metadata, loopback, link-local, or private IPv4 target and bypasses the intended SSRF restrictions. Media import can disclose response bodies, while webhook delivery can expose response status as a network-probing side channel. This issue is fixed in version 2.18.0."
                }
            ],
            "source": {
                "advisory": "GHSA-wxgm-8qjw-x445",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/penpot/penpot/security/advisories/GHSA-wxgm-8qjw-x445",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-08T02:23:29.430898Z",
                                "id": "CVE-2026-105689",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-10-08T02:23:53.207Z"
                }
            }
        ]
    }
}