CVE-2026-10616: Authorization Bypass in nextlevelbuilder GoClaw Task Completion

Technical summary

CVE-2026-10616 is an authorization bypass vulnerability in the TeamTasksTool.executeComplete function within nextlevelbuilder GoClaw's internal/tools/team_tasks_lifecycle.go file. The flaw stems from inadequate access control validation (CWE-862: Missing Authorization, CWE-863: Incorrect Authorization) that allows an authenticated attacker to execute task completion operations without proper permission checks. The vulnerability is remotely exploitable over the network and requires only a standard user session—no privilege escalation or complex preconditions are necessary. The CVSS v3.1 score of 4.3 reflects the limitation to authenticated access and the integrity impact scope (task manipulation rather than data exfiltration or system availability compromise).

Business impact

This vulnerability allows insiders or compromised user accounts to complete tasks outside their assigned scope, undermining task workflow integrity and audit trails. In environments where task completion triggers downstream processes—billing cycles, compliance workflows, or resource allocation—unauthorized manipulation could disrupt operations or create false compliance records. The low barrier to exploitation (login + network access) makes it particularly relevant for insider-threat scenarios or after credential compromise. However, the impact remains bounded to task state modification; it does not enable data theft or service outage.

Affected systems

nextlevelbuilder GoClaw versions up to and including 3.11.3 are affected. The vulnerability is present in the Team Task Completion Handler component. Organizations running GoClaw in production should verify their exact version against vendor advisories to confirm exposure. Later versions (post-3.11.3) have not been flagged as vulnerable in this advisory and should be checked against vendor patch announcements.

Exploitability

The vulnerability is remotely exploitable and has been publicly disclosed with working exploit code available. The attack requires an authenticated session (CWE-862/863 categorization confirms authorization rather than authentication is the flaw), meaning internal users or attackers with stolen credentials can trigger it without special tools or timing. The low complexity of the attack vector (AC:L) and the public availability of proof-of-concept material significantly elevate practical risk despite the medium CVSS baseline. Organizations should treat this as a near-term threat, particularly in environments with multiple user accounts or where credential compromise is plausible.

Remediation

Immediately upgrade GoClaw to a version newer than 3.11.3 once the vendor releases a patched build; verify the specific patched version against nextlevelbuilder's official advisory. During the interim, implement compensating controls: enforce principle-of-least-privilege for task completion roles, monitor task completion audit logs for anomalous activity, and restrict network access to the GoClaw application to trusted internal segments only. If the application supports per-task authorization policies or approval workflows, ensure they are enabled and enforced at the policy layer independent of the application code.

Patch guidance

Contact nextlevelbuilder or check their security advisories for the fixed version number and release date. When available, plan a maintenance window to upgrade all affected GoClaw instances. Test the upgrade in a non-production environment first to confirm compatibility with your workflows and any custom integrations. Document the patch deployment and verify task completion functionality post-upgrade. If a patch is not yet available, maintain heightened monitoring until an update is released.

Detection guidance

Monitor for unexpected task completion events in audit logs, particularly completions by users who do not typically complete those task types or outside their assigned workflow roles. Check for POST/PUT requests to task completion endpoints from unusual user accounts or IP ranges. Review task completion timestamps for clusters of activity that may indicate systematic exploitation. If your application logs the attempted authorization check results, search for logs showing bypassed or missing authorization decisions. Consider implementing behavioral analytics to detect users completing significantly more tasks than their historical baseline.

Why prioritize this

Although the CVSS score is 4.3 (medium), the public exploit availability, low attack complexity, and authenticated-but-not-privileged requirement elevate this beyond a routine medium-priority patch. Organizations should address this in the near term (within 2–4 weeks) to close the window before mass exploitation occurs. Prioritize based on environment: high-security or compliance-heavy deployments should patch first, followed by general production rollout. The absence of KEV status does not diminish urgency given public disclosure and live exploit code.

Risk score, explained

The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N reflects a remotely exploitable flaw requiring login credentials, low attack complexity, no user interaction, and localized integrity impact (task data modification only). The score of 4.3 correctly captures that the vulnerability is not trivial but is bounded: no confidentiality breach, no availability impact, and no cross-boundary exploitation. However, real-world context (public exploit code, ease of execution by any user) warrants treating this as higher-priority than the numeric score alone might suggest.

Frequently asked questions