CVE-2026-23989

Published: Feb 6, 2026Modified: Feb 24, 2026

8.1

Vector

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

Exploitability: 2.8 / Impact: 5.2

Source: NVD

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.

Affected (2)

Products: Heinlein: Opencloud Reva

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Heinlein Opencloud Reva	Before 2.40.3
Heinlein Opencloud Reva	From 2.41.0 to 2.42.3

Related CWEs

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. This allows attackers to bypass intended access restrictions.

References (2)

https://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1

Source: security-advisories@github.com

Patch

https://github.com/opencloud-eu/reva/security/advisories/GHSA-9j2f-3rj3-wgpg

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.