{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-15646",
        "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "state": "PUBLISHED",
        "assignerShortName": "CPANSec",
        "dateReserved": "2026-05-22T10:47:01.107Z",
        "datePublished": "2026-07-01T14:38:03.727Z",
        "dateUpdated": "2026-07-01T18:09:08.371Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://cpan.org/modules",
                    "defaultStatus": "unaffected",
                    "packageName": "HTML-Gumbo",
                    "product": "HTML::Gumbo",
                    "programFiles": [
                        "lib/HTML/Gumbo.xs"
                    ],
                    "programRoutines": [
                        {
                            "name": "walk_tree"
                        }
                    ],
                    "repo": "https://github.com/bestpractical/HTML-Gumbo",
                    "vendor": "BPS",
                    "versions": [
                        {
                            "lessThan": "0.19",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Vincent Lefevre"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Niko Tyni"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion.\n\nSupport for the <template> element was added to libgumbo 0.10.0 in 2015, but the walk_tree function in lib/HTML/Gumbo.xs was not updated to support it. The element was treated as a text-node, where strlen() over-reads the heap block that the pointer addresses.\n\nAny caller that runs parse() with the default format => 'string', or with format => 'tree', on input containing a <template> element serializes the over-read bytes into the returned result, disclosing bounded heap contents. format => 'callback' reaches a croak on the unhandled node type and is unaffected."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-843",
                            "description": "CWE-843 Access of Resource Using Incompatible Type (Type Confusion)",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "description": "CWE-125 Out-of-bounds Read",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
                "shortName": "CPANSec",
                "dateUpdated": "2026-07-01T14:38:03.727Z"
            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/bestpractical/HTML-Gumbo/commit/15c0598909d4a64f47ef0a1abc5051f4e113c186.patch"
                },
                {
                    "tags": [
                        "release-notes"
                    ],
                    "url": "https://metacpan.org/release/BPS/HTML-Gumbo-0.19/changes"
                },
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://bugs.debian.org/1104789"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to HTML-Gumbo 0.19 or later, which adds GUMBO_NODE_TEMPLATE to the container node types handled by walk_tree."
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "timeline": [
                {
                    "lang": "en",
                    "time": "2015-04-30T00:00:00.000Z",
                    "value": "Gumbo 0.10.0 released with support for the <template> element."
                },
                {
                    "lang": "en",
                    "time": "2025-05-06T00:00:00.000Z",
                    "value": "Reported to the Debian bug tracker (#1104789)."
                },
                {
                    "lang": "en",
                    "time": "2025-05-17T00:00:00.000Z",
                    "value": "Fix committed upstream."
                },
                {
                    "lang": "en",
                    "time": "2026-05-21T00:00:00.000Z",
                    "value": "Version 0.19 released with fix."
                }
            ],
            "title": "HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion",
            "x_generator": {
                "engine": "cpansec-cna-tool 0.1"
            }
        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/07/01/7"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2026-07-01T17:36:44.275Z"
                }
            },
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.8,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-01T18:08:40.682429Z",
                                "id": "CVE-2025-15646",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-01T18:09:08.371Z"
                }
            }
        ]
    }
}