CVE-2026-6635 Details
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.
An authentication bypass vulnerability has been identified in Rowboat Labs' Rowboat application, specifically in versions through 0.1.67. The issue resides in the tools_webhook component, within the function tool_call of the file apps/experimental/tools_webhook/app.py. This vulnerability allows remote, unauthenticated attackers to manipulate the X-Tools-JWE header, leading to improper authentication by exploiting the application's JSON Web Token (JWT) validation process. The server's JWT parsing logic fails to enforce secure algorithm requirements, allowing attackers to forge tokens and bypass authentication entirely.
It is recommended to update the JWT verification logic to only allow secure, predefined algorithms, such as HS256 or RS256, and to reject any tokens that specify 'none' as the algorithm.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 20, 2026CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Dave-gilmore-aus/security-advisories/blob/main/rowbat-advisory | [email protected] | AdvisoryExploitRemedy |
| https://vuldb.com/submit/793433 | [email protected] | AdvisoryTechnical Description |
| https://vuldb.com/vuln/358269 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/vuln/358269/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Rowboat | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Apr 20, 2026 | New CVE Received | [email protected] |