Angular: Information Leak via Default Caching of Credentialed Requests in HttpTransferCache_CVE-2026-50170

{
    "lastseen": "",
    "description": "Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, a vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are enabled. The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed during SSR and transferring the cached state to the client-side application via TransferState. However, the caching mechanism fails to inspect the withCredentials flag or the Cookie header of outgoing requests. As a result, credentialed, user-specific responses may be cached by default in the shared TransferState payload. When these responses are serialized into the HTML, any caching layer (such as a CDN, reverse proxy, or shared server cache) that caches the SSR-rendered HTML page could inadvertently cache and leak one user's private data to other users, leading to a high-severity information disclosure vulnerability. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.",
    "published": "2026-06-22T15:39:08.877Z",
    "modified": "2026-06-22T16:01:17.572Z",
    "type": "cve",
    "title": "Angular: Information Leak via Default Caching of Credentialed Requests in HttpTransferCache",
    "source": "GitHub_M",
    "references": "https://github.com/angular/angular/security/advisories/GHSA-q6f4-qqrg-jv6x\nhttps://github.com/angular/angular/pull/67964",
    "id": "CVE-2026-50170",
    "bulletinFamily": "",
    "cwe": [
        "CWE-524"
    ],
    "cvelist": null,
    "sourceData": "angular angular >= 22.0.0-next.0, < 22.0.0-rc.2\nangular angular >= 21.0.0-next.0, < 21.2.15\nangular angular >= 20.0.0-next.0, < 20.3.22\nangular angular >= 19.0.0-next.0, < 19.2.23\nangular angular <= 18.2.14",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "angular",
    "version": ">= 22.0.0-next.0, < 22.0.0-rc.2",
    "vendor": "angular",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}