Improper Authorization in GoClaw by Nextlevelbuilder
CVE-2026-16121

5.3MEDIUM

Key Information:

Vendor

Nextlevelbuilder

Status
Goclaw
Vendor
CVE Published:
18 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16121?

A vulnerability has been discovered in GoClaw by Nextlevelbuilder, affecting version 3.13.2. This issue is centered around the isSafeBin function in the internal/tools/exec_approval.go file. Due to improper authorization handling, attackers can exploit this vulnerability remotely, leading to unauthorized access. With exploits already publicly available, users of this software should take immediate actions to mitigate risks. Ensure that you stay informed about updates and follow best security practices to protect your systems.

Affected Version(s)

GoClaw 3.13.0

GoClaw 3.13.1

GoClaw 3.13.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-16121 - Proof of Concept

References

https://vuldb.com/vuln/379830
vdb-entrytechnical-description
https://vuldb.com/vuln/379830/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16121
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Erichen (VulDB User)
.