Vulnerability · Published Apr 20, 2026 · Assigned by VulDB

CVE-2026-6635rowboatlabs rowboat tools_webhook app.py tool_call improper authentication

High 7.3

In plain English

A high-severity improper authentication in rowboat from rowboatlabs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.5%top 59.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in rowboatlabs rowboat up to 0.1.67. This impacts the function tool_call of the file apps/experimental/tools_webhook/app.py of the component tools_webhook. Such manipulation of the argument X-Tools-JWE leads to improper authentication. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
rowboatlabs	rowboat	0.1.00.1.10.1.20.1.30.1.40.1.50.1.60.1.7

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-358269 | rowboatlabs rowboat tools_webhook app.py tool_call improper authentication vdb-entry, technical-description
VDB-358269 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #793433 | Rowboat Labs Rowboat 0.1.67 Authentication Bypass Issues third-party-advisory
https://github.com/Dave-gilmore-aus/security-advisories/blob/main/rowbat-advisory exploit