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VulnerabilityPublished Updated

CVE-2026-91161: rmyndharis OpenWA · Incorrect Authorization

Affects rmyndharis OpenWASource CVE Database V5

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Not known to be exploited · CVSS 6.4 Medium : upgrade to 0.23.5 when convenient.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.23.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade OpenWA and rmyndharis/OpenWA to 0.23.5.

Affected software

ProductAffectedFixed in
rmyndharisOpenWAAffected
  • <0.23.5
Fixed in
  • 0.23.5
GitHubrmyndharis/OpenWApkg:github/rmyndharis/OpenWAOther threatsAffected
  • <0.23.5
Fixed in
  • 0.23.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade OpenWA to version 0.23.5 or later, where the authorization check requiring the OPERATOR role for retrieving group invite codes is enforced. Deployments should avoid issuing VIEWER keys to parties who should not have the ability to add accounts to groups. No additional mitigation is required once the upgrade is applied.

Description

OpenWA versions prior to 0.23.5 contain an authorization flaw in the GET /api/sessions/{sessionId}/groups/{groupId}/invite-code endpoint and the GroupGetInviteCode MCP tool. These endpoints lack the required OPERATOR role check, allowing users with a VIEWER key scoped to a session to retrieve active group invite codes. Since invite codes allow joining WhatsApp groups, unauthorized users can join groups, gain read and post access, and maintain membership even after VIEWER key revocation. The issue is fixed in version 0.23.5.

References

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