Fedify affected by resource exhaustion caused by unbounded redirect following during remote key/document resolution_CVE-2026-34148

{
    "lastseen": "",
    "description": "Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to 1.9.6, 1.10.5, 2.0.8, and 2.1.1, @fedify/fedify follows HTTP redirects recursively in its remote document loader and authenticated document loader without enforcing a maximum redirect count or visited-URL loop detection. An attacker who controls a remote ActivityPub key or actor URL can force a server using Fedify to make repeated outbound requests from a single inbound request, leading to resource consumption and denial of service. This vulnerability is fixed in 1.9.6, 1.10.5, 2.0.8, and 2.1.1.",
    "published": "2026-04-06T15:06:53.197Z",
    "modified": "2026-04-07T14:25:51.368Z",
    "type": "cve",
    "title": "Fedify affected by resource exhaustion caused by unbounded redirect following during remote key/document resolution",
    "source": "GitHub_M",
    "references": "https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp\nhttps://github.com/fedify-dev/fedify/releases/tag/1.10.5\nhttps://github.com/fedify-dev/fedify/releases/tag/1.9.6\nhttps://github.com/fedify-dev/fedify/releases/tag/2.0.8\nhttps://github.com/fedify-dev/fedify/releases/tag/2.1.1",
    "id": "CVE-2026-34148",
    "bulletinFamily": "",
    "cwe": [
        "CWE-400",
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "@fedify fedify < 1.9.6\n@fedify fedify >= 1.10.0, < 1.10.5\n@fedify fedify >= 2.0.0, < 2.0.8\n@fedify fedify >= 2.1.0, < 2.1.1\n@fedify vocab-runtime < 2.0.8\n@fedify vocab-runtime >= 2.1.0, < 2.1.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "fedify",
    "version": "< 1.9.6",
    "vendor": "@fedify",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}