CVE-2026-84856: Rowboatlabs Rowboat

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability was detected in rowboatlabs rowboat up to 0.9.1. The impacted element is the function request.text/req.json of the file apps/rowboat/app/api/composio/webhook/route.ts of the component Composio Webhook Endpoint. The manipulation results in denial of service. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 0.9.2 is sufficient to resolve this issue. Upgrading the affected component is recommended. The legacy Next.js app was deleted at 0.9.2 rather than patched, leaving no security control behind.

Affected products

• Rowboatlabs Rowboat: version 0.9.0 only; version 0.9.1 only

Published 2026-09-02. Last modified 2026-09-28.