CVE-2026-91161

MEDIUMPre-NVD 6.46.4
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 6.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: secondary
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.4
EG Score
6.4(low)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity64% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

September 24, 2026

Last Modified

September 24, 2026

Advisory Details (5)

Auto-updated Sep 24, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

v0.23.5

Patch available: rmyndharis/OpenWA v0.23.5

https://github.com/rmyndharis/OpenWA/releases/tag/v0.23.5
github_commit

commit d66439db9653 (rmyndharis/OpenWA)

Fix landed in rmyndharis/OpenWA commit d66439db9653 — awaiting tagged release

https://github.com/rmyndharis/OpenWA/commit/d66439db9653c7aa7cbfb763003c8d3cbc8f623c
github_commit

commit a888a0121543 (rmyndharis/OpenWA)

Fix landed in rmyndharis/OpenWA commit a888a0121543 — awaiting tagged release

https://github.com/rmyndharis/OpenWA/commit/a888a0121543426d4e1bf55f9edaed8306ae2699
github_pr

fix(security): require the OPERATOR role for the group invite-code read

Fix merged in rmyndharis/OpenWA PR #1572 on 2026-09-09 — awaiting tagged release

https://github.com/rmyndharis/OpenWA/pull/1572
github Patch Available

VIEWER API keys can read WhatsApp group invite codes · Advisory · rmyndharis/OpenWA · GitHub

Affected: 0.23.5 by

https://github.com/rmyndharis/OpenWA/security/advisories/GHSA-45fh-xj7x-vj2x

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 17:33 UTCEG score recompute
  2. 2026-09-24 16:57 UTCEG score recompute
  3. 2026-09-24 16:56 UTCMITRE cvelistV5first tracked

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Frequently asked(4)

What is CVE-2026-91161?
CVE-2026-91161 is a medium vulnerability published on September 24, 2026. 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…
When was CVE-2026-91161 disclosed?
CVE-2026-91161 was first published in the National Vulnerability Database on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-91161?
CVE-2026-91161 has a CVSS v3 base score of 6.4 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-91161?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91161, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-91161

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