CVE-2026-84856CWE-404

CVE-2026-84856

Medium · published September 3, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
52.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00701 · 52.7th percentile
Weakness
CWE-404 · Improper Resource Shutdown or Release
Published
2026-09-03T00:17Z
References (6)
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 19:45Z
    rowboatlabs rowboat Composio Webhook Endpoint route.ts req.json denial of service
    cvelistv5