CVE-2026-16121: Access Control Flaw (CVSS 6.3)

Description

A vulnerability was identified in nextlevelbuilder GoClaw up to 3.13.2. Affected is the function isSafeBin of the file internal/tools/exec_approval.go. The manipulation leads to improper authorization. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-266 CWE-266

CWE-285 CWE-285

References

Other References

https://github.com/nextlevelbuilder/goclaw/ https://github.com/nextlevelbuilder/goclaw/issues/1206 https://github.com/nextlevelbuilder/goclaw/issues/1214 https://vuldb.com/cve/CVE-2026-16121 https://vuldb.com/submit/856827 https://vuldb.com/vuln/379830 https://vuldb.com/vuln/379830/cti

Frequently Asked Questions

What is CVE-2026-16121? +

A vulnerability was identified in nextlevelbuilder GoClaw up to 3.13.2. Affected is the function isSafeBin of the file internal/tools/exec_approval.go. The manipulation leads to improper authorization. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-16121? +

CVE-2026-16121 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-16121? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-16121