CVE-2026-91161

MEDIUM 6.4

OpenWA: VIEWER API keys can read WhatsApp group invite codes

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

OpenWA is a free, open source, self-hosted WhatsApp API gateway. Prior to 0.23.5, the GET /api/sessions/{sessionId}/groups/{groupId}/invite-code endpoint and the GroupGetInviteCode MCP tool have no OPERATOR role requirement, allowing a valid VIEWER key scoped to a session to retrieve an active group invite code. The invite code is a transferable WhatsApp bearer capability, so an external account can join a group administered by the session without an OpenWA credential, gain read and post access to the group, and retain membership after the VIEWER key is revoked. Affected deployments are those that issue VIEWER keys to parties who should not be able to add accounts to administered groups; OPERATOR and ADMIN access is intended. This issue is fixed in version 0.23.5.

CWE	CWE-863
Vendor	rmyndharis
Product	openwa
Published	Sep 24, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

rmyndharis / OpenWA

< 0.23.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rmyndharis/OpenWA/security/advisories/GHSA-45fh-xj7x-vj2x github.com: https://github.com/rmyndharis/OpenWA/pull/1572 github.com: https://github.com/rmyndharis/OpenWA/commit/a888a0121543426d4e1bf55f9edaed8306ae2699 github.com: https://github.com/rmyndharis/OpenWA/commit/d66439db9653c7aa7cbfb763003c8d3cbc8f623c github.com: https://github.com/rmyndharis/OpenWA/releases/tag/v0.23.5