CVE-2026-10616: GoClaw Authorization Bypass Vulnerability

CVE-2026-10616 Overview

CVE-2026-10616 is a missing authorization vulnerability [CWE-862] affecting nextlevelbuilder GoClaw versions up to 3.11.3. The flaw resides in the TeamTasksTool.executeComplete function within internal/tools/team_tasks_lifecycle.go, part of the Team Task Completion Handler component. An authenticated remote attacker can exploit the weakness to complete team tasks without proper authorization checks. A public proof-of-concept exists in the project's GitHub repository, and the maintainers have tagged the report as a bug.

Critical Impact
Authenticated remote attackers can manipulate team task completion state in GoClaw without authorization validation, affecting integrity of task lifecycle data.

Affected Products

nextlevelbuilder GoClaw versions up to and including 3.11.3
Component: Team Task Completion Handler (internal/tools/team_tasks_lifecycle.go)
Function: TeamTasksTool.executeComplete

Discovery Timeline

2026-06-02 - CVE-2026-10616 published to the National Vulnerability Database (NVD)
2026-06-02 - Last updated in NVD database

Technical Details for CVE-2026-10616

Vulnerability Analysis

The vulnerability is a missing authorization issue [CWE-862] in the GoClaw task lifecycle subsystem. The TeamTasksTool.executeComplete handler performs a state-changing operation by marking a team task as complete. The handler fails to verify whether the requesting principal holds permission to complete the targeted task. Any authenticated user able to reach the endpoint can therefore trigger the completion path on tasks owned by other team members or workflows they do not control.

The attack requires network access and low privileges. No user interaction is needed. The confidentiality impact is none, while integrity is affected at a low level because the attacker can change task state but cannot exfiltrate data or disrupt service availability.

Root Cause

The root cause is the absence of an authorization check between authentication and the execution of the task completion logic. The function trusts the caller's session context without validating ownership, team membership, or role-based permissions against the target task identifier passed in the request.

Attack Vector

An attacker authenticates to the GoClaw application with any valid low-privileged account. The attacker then invokes the team task completion operation while supplying a task identifier belonging to another user or team. Because no authorization predicate guards the operation, the server processes the request and updates the task state.

The vulnerability is described in prose because no verified exploit code is published in this advisory. Refer to the GitHub Issue Tracker and the VulDB Vulnerability Detail for further technical context.

Detection Methods for CVE-2026-10616

Indicators of Compromise

Task completion events in GoClaw audit logs where the actor user identifier does not match the task owner or assigned team member.
Unexpected transitions of team tasks to the completed state outside normal working hours or workflow patterns.
Repeated calls to the task completion endpoint targeting sequential or enumerated task identifiers.

Detection Strategies

Enable verbose application logging on the GoClaw task lifecycle endpoints and capture caller identity, target task identifier, and outcome.
Correlate authentication events with subsequent task completion API calls to detect cross-user state changes.
Baseline normal task completion behavior per user and alert on deviations such as bulk completions or completions across unrelated teams.

Monitoring Recommendations

Forward GoClaw application logs to a centralized analytics platform for retention and correlation.
Monitor HTTP request volume and error rates against the team task completion route for anomalous spikes.
Track changes to the Go source tree under internal/tools/team_tasks_lifecycle.go so that downstream forks can verify the presence of authorization checks.

How to Mitigate CVE-2026-10616

Immediate Actions Required

Inventory all deployments of nextlevelbuilder GoClaw and identify instances running version 3.11.3 or earlier.
Restrict network exposure of the GoClaw application to trusted users until an upstream fix is applied.
Review recent task completion audit logs for unauthorized state changes and revert affected tasks.
Rotate API tokens or session credentials for accounts that may have been used to exercise the missing authorization path.

Patch Information

At the time of publication, no fixed version is recorded in the NVD entry. Monitor the upstream GoClaw repository and the tracked issue for a patched release that introduces authorization enforcement in TeamTasksTool.executeComplete.

Workarounds

Apply a reverse proxy or application-layer policy that restricts the team task completion endpoint to administrators while a vendor patch is pending.
Add a compensating authorization middleware around the affected route to validate that the authenticated principal owns or is assigned to the target task.
Limit account provisioning so that only trusted users can authenticate to the GoClaw instance, reducing the pool of potential attackers.

bash

# Example reverse proxy restriction (nginx) limiting the completion route
# to internal administrative networks until a patched GoClaw release is deployed
location /api/team-tasks/complete {
    allow 10.0.0.0/24;   # admin subnet
    deny  all;
    proxy_pass http://goclaw_backend;
}