Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream_CVE-2026-40168

{
    "lastseen": "",
    "description": "Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.",
    "published": "2026-04-10T19:20:16.365Z",
    "modified": "2026-04-10T19:20:16.365Z",
    "type": "cve",
    "title": "Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream",
    "source": "GitHub_M",
    "references": "https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww\nhttps://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06\nhttps://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5",
    "id": "CVE-2026-40168",
    "bulletinFamily": "",
    "cwe": [
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "gitroomhq postiz-app < 2.21.5",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L",
        "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": "postiz-app",
    "version": "< 2.21.5",
    "vendor": "gitroomhq",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}