PT-2026-6645 · Opencloud · Reva

Rhafer · Published 2026-02-05 · Updated 2026-03-03 · CVE-2026-23989

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions REVA versions prior to 2.40.3 REVA versions prior to 2.42.3

Description A flaw exists in the GRPC authorization middleware of the "Reva" component of OpenCloud. This allows a malicious user to bypass scope verification of a public link. By exploiting this through the "archiver" service, an attacker can create an archive (zip or tar-file) containing all resources accessible to the creator of the public link. The issue is not exploitable via WebDAV requests.

Recommendations Update to REVA version 2.40.3 or later. Update to REVA version 2.42.3 or later.

Exploit

Fix

Incorrect Authorization

Path traversal

Weakness Enumeration

CWE-863

CWE-22

Related Identifiers

CVE-2026-23989

GHSA-9J2F-3RJ3-WGPG

GO-2026-4444

OPENSUSE-SU-2026:10159-1

SUSE-SU-2026:0757-1

Affected Products

Reva

References · 119

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23989.json · Exploit
• https://github.com/opencloud-eu/reva/security/advisories/GHSA-9j2f-3rj3-wgpg · Vendor Advisory
• https://github.com/opencloud-eu/reva/commit/95aa2bc5d980eaf6cc134d75782b4f5ac7b36ae1 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23989 · Security Note
• https://osv.dev/vulnerability/GO-2026-4444 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-23989 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9j2f-3rj3-wgpg · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0757-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10159-1 · Vendor Advisory
• https://github.com/opencloud-eu/reva · Note
• https://suse.com/security/cve/CVE-2025-13767 · Note
• https://suse.com/security/cve/CVE-2025-64111 · Note
• https://suse.com/security/cve/CVE-2026-27017 · Note
• https://suse.com/security/cve/CVE-2026-27598 · Note
• https://suse.com/security/cve/CVE-2025-66630 · Note