8.1

CVE-2026-23989

REVA Public Link Exploit

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Heinlein ≫ Opencloud Reva Version < 2.40.3
Heinlein ≫ Opencloud Reva Version >= 2.41.0 < 2.42.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.188
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
security-advisories@github.com 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://github.com/opencloud-eu/reva/security/advisories/GHSA-9j2f-3rj3-wgpg
Vendor Advisory
https://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1
Patch