Server-Side Template Injection Vulnerability in SmartAdmin by 1024-lab
CVE-2026-3725

5.3MEDIUM

Key Information:

Vendor

1024-lab

Status
Smartadmin
Vendor
CVE Published:
8 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3725?

A vulnerability exists in the SmartAdmin framework by 1024-lab, specifically affecting the FreeMarker Template Handler. The flaw resides in the function freemarkerResolverContent within the MailService.java file. This issue allows an attacker to manipulate the template_content argument, leading to improper neutralization of special elements utilized in the template engine. Notably, the exploitation can occur remotely, raising concerns for Security Operations. The vendor was notified about this vulnerability, but no response was received, highlighting the need for users to take immediate action to safeguard their systems.

Affected Version(s)

SmartAdmin 3.0

SmartAdmin 3.1

SmartAdmin 3.2

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-2026-3725 - Proof of Concept

References

https://vuldb.com/?id.349703
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349703
signaturepermissions-required
https://vuldb.com/?submit.766459
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

din4 (VulDB User)
VulDB
.