REVA Public Link Exploit_CVE-2026-23989

8.2 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Description

REVA is an interoperability platform. Prior to 2.42.3 and 2.40.3, a bug in the GRPC authorization middleware of the "Reva" component of OpenCloud allows a malicious user to bypass the scope verification of a public link. By exploiting this via the the "archiver" service this can be leveraged to create an archive (zip or tar-file) containing all resources that this creator of the public link has access to. This vulnerability is fixed in 2.42.3 and 2.40.3.

Basic Information

ID CVE-2026-23989

Source GitHub_M

Published Feb 6, 2026 at 18:28

Modified Feb 6, 2026 at 18:52

Affected Product

Vendor opencloud-eu

Product reva

Version < 2.40.3

Affected Versions opencloud-eu reva < 2.40.3
opencloud-eu reva >= 2.41.0, < 2.42.3

CWE Classification

CWE-863

References

{
    "lastseen": "",
    "description": "REVA is an interoperability platform. Prior to 2.42.3 and 2.40.3, a bug in the GRPC authorization middleware of the \"Reva\" component of OpenCloud allows a malicious user to bypass the scope verification of a public link. By exploiting this via the the \"archiver\" service this can be leveraged to create an archive (zip or tar-file) containing all resources that this creator of the public link has access to. This vulnerability is fixed in 2.42.3 and 2.40.3.",
    "published": "2026-02-06T18:28:25.075Z",
    "modified": "2026-02-06T18:52:19.409Z",
    "type": "cve",
    "title": "REVA Public Link Exploit",
    "source": "GitHub_M",
    "references": "https://github.com/opencloud-eu/reva/security/advisories/GHSA-9j2f-3rj3-wgpg\nhttps://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1",
    "id": "CVE-2026-23989",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "opencloud-eu reva < 2.40.3\nopencloud-eu reva >= 2.41.0, < 2.42.3",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
        "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": "reva",
    "version": "< 2.40.3",
    "vendor": "opencloud-eu",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}