CVE-2026-91160
CVE-2026-91160
OpenWA is a free, open source, self-hosted WhatsApp API gateway. Prior to 0.23.5, the /events WebSocket gateway delivers the session.qr event to a VIEWER API key that subscribes by event name or through either wildcard subscription form, even though GET /api/sessions/{sessionId}/qr requires the OPERATOR role. When an allowed session is waiting to be paired, the exposed QR lets the key holder link an external device to the WhatsApp account and then read and send messages outside OpenWA and its audit trail. Keys restricted through allowedSessions remain limited to those sessions, and deployments that issue only OPERATOR or ADMIN keys are not affected. This issue is fixed in version 0.23.5.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/rmyndharis/OpenWA/security/advisories/GHSA-m427-j4h4-9qwj
- github.com/rmyndharis/OpenWA/pull/1602
- github.com/rmyndharis/OpenWA/commit/acc23c3803c07f43791a92e8e48456572fd69bdc
- github.com/rmyndharis/OpenWA/commit/b9d9ea1c57bde98b7833a5d6e482998703667ef0
- github.com/rmyndharis/OpenWA/releases/tag/v0.23.5
Frequently asked questions
- What is CVE-2026-91160?
- CVE-2026-91160 is a high-severity vulnerability, classified under Missing Authorization. CVSS score: 8.2/10. Published 2026-09-24.
- How severe is CVE-2026-91160?
- High severity. CVSS v3 base score is 8.2 out of 10.