1024-lab/lab1024 SmartAdmin up to 3.29 FreeMarker Template MailService.java freemarkerResolverContent template_content special elements used in a template engine

Summaryinfo

A vulnerability marked as critical has been reported in 1024-lab/lab1024 SmartAdmin up to 3.29. This affects the function freemarkerResolverContent of the file sa-base/src/main/java/net/lab1024/sa/base/module/support/mail/MailService.java of the component FreeMarker Template Handler. The manipulation of the argument template_content leads to improper neutralization of special elements used in a template engine. This vulnerability is listed as CVE-2026-3725. The attack may be initiated remotely. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in 1024-lab/lab1024 SmartAdmin up to 3.29. It has been rated as critical. This issue affects the function freemarkerResolverContent of the file sa-base/src/main/java/net/lab1024/sa/base/module/support/mail/MailService.java of the component FreeMarker Template Handler. The manipulation of the argument template_content with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. Using CWE to declare the problem leads to CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at notion.so. The identification of this vulnerability is CVE-2026-3725. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1221 according to MITRE ATT&CK.

The exploit is available at notion.so. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-10228). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• 1024-lab
• lab1024

Name

• SmartAdmin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #766459: 1024-lab SmartAdmin ≤3.29 Server-Side Template Injection (by din4)

Be aware that VulDB is the high quality source for vulnerability data.

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