Injection Vulnerability in GL-iNet GL-MT3000 Plugins
CVE-2026-18613

9.3CRITICAL

Key Information:

Vendor

Gl-inet

Status
Gl-mt3000
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18613?

A security issue has been identified in GL-iNet's GL-MT3000 router affecting versions up to 4.4.5, specifically within the 'plugins.set_config' function located in the '/cgi-bin/glc' file of the 'plugins.so' native plugin. This vulnerability enables attackers to perform remote injection by manipulating the configuration settings. The public disclosure of this exploit poses significant risks as it allows unauthorized access and potential control over the affected system. GL-iNet has been notified of this vulnerability, confirming its existence. Users are advised to take necessary precautions and monitor for updates.

Affected Version(s)

GL-MT3000 4.4.0

GL-MT3000 4.4.1

GL-MT3000 4.4.2

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-2026-18613 - Proof of Concept

References

https://vuldb.com/vuln/385533
vdb-entrytechnical-description
https://vuldb.com/vuln/385533/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18613
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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

strforexc (VulDB User)
VulDB CNA Team
.