Auth bypass in Nextlevelbuilder Goclaw
CVE-2026-16123
A weakness has been identified in nextlevelbuilder GoClaw up to 3.13.2. Affected by this issue is the function ToolsInvokeHandler.ServeHTTP of the file internal/http/tools_invoke.go of the component Invoke Endpoint. This manipulation causes missing authorization. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Nextlevelbuilder Goclaw — versions 3.13.0, 3.13.1, 3.13.2
Weakness classification (CWE)
References
- vuldb.com/vuln/379832 (technical-description, vdb-entry)
- vuldb.com/vuln/379832/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-16123 (third-party-advisory)
- vuldb.com/submit/856857 (third-party-advisory)
- github.com/nextlevelbuilder/goclaw/issues/1217 (issue-tracking, exploit)
- github.com/nextlevelbuilder/goclaw/issues/1217 (issue-tracking)
- github.com/nextlevelbuilder/goclaw/ (product)
Frequently asked questions
- What is CVE-2026-16123?
- CVE-2026-16123 is a medium-severity vulnerability in Nextlevelbuilder Goclaw, classified under Missing Authorization. CVSS score: 6.3/10. Published 2026-07-18.
- How severe is CVE-2026-16123?
- Medium severity. CVSS v3 base score is 6.3 out of 10.