Improper Authentication Vulnerability in Rowboat Labs Rowboat Tool
CVE-2026-6635

6.9MEDIUM

Key Information:

Vendor

Rowboatlabs

Status
Rowboat
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6635?

A vulnerability has been identified in Rowboat Labs' Rowboat, specifically in the tools_webhook component. The issue lies within the tool_call function in the apps/experimental/tools_webhook/app.py file, where manipulation of the X-Tools-JWE argument can lead to improper authentication. This could be exploited remotely, potentially allowing unauthorized access to sensitive functionality. Despite early disclosure to the vendor, there has been no response regarding this critical issue.

Affected Version(s)

rowboat 0.1.0

rowboat 0.1.1

rowboat 0.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6635 - Proof of Concept

References

https://vuldb.com/vuln/358269
vdb-entrytechnical-description
https://vuldb.com/vuln/358269/cti
signaturepermissions-required
https://vuldb.com/submit/793433
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

davidgilmore (VulDB User)
VulDB CNA Team
.