Read the docs
TI-2026-61912 Aliases CVE-2026-91161

OpenWA: VIEWER API keys can read WhatsApp group invite codes

Priority LOW 28CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix Fixed OpenWA (rmyndharis): 0.23.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rmyndharisOpenWAbefore 0.23.50.23.5Patch availableCNA
  • OpenWA Vendorrmyndharis Affected before 0.23.5 Fixed in 0.23.5 Patch available CNA

Remediation

  • Fix · CNA OpenWA (rmyndharis) Fixed in 0.23.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-91161
  2. 2026-10-05 CISA SSVC decision points changed

References

Other 5

  • TI-2026-61911 OpenWA: A read-only API key can receive a session pairing QR over the WebSocket event stream CVSS 3.1HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences