OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others “storage..httpx_access_token” leads to Sensitive Data Exposure_CVE-2026-52783

{
    "lastseen": "",
    "description": "OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key storage.<id>.httpx_access_token, repopulated continuously by an hourly cron and every userless-OAuth call site (see Write cadence). None of the three allowed cache backends (file_store, memcache, redis) encrypts at rest. An attacker with read access to the cache backend recovers the Azure-AD application-tier bearer with an anonymous get over the memcached binary protocol (or the equivalent against Redis). This vulnerability is fixed in 17.3.3 and 17.4.1.",
    "published": "2026-06-26T18:57:58.860Z",
    "modified": "2026-06-26T18:57:58.860Z",
    "type": "cve",
    "title": "OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others \"storage.<id>.httpx_access_token\" leads to Sensitive Data Exposure",
    "source": "GitHub_M",
    "references": "https://github.com/opf/openproject/security/advisories/GHSA-h83w-5q5x-pq27",
    "id": "CVE-2026-52783",
    "bulletinFamily": "",
    "cwe": [
        "CWE-313"
    ],
    "cvelist": null,
    "sourceData": "opf openproject < 17.3.3\nopf openproject >= 17.4.0, < 17.4.1",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "confidentialityImpact": "",
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        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "openproject",
    "version": "< 17.3.3",
    "vendor": "opf",
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    "ai_score": 0
}