VulnerabilityPublished 8 Mar 2026Updated 11 Mar 2026

CVE-2026-3725: 1024-lab SmartAdmin · Template Injection

Affects 1024-lab SmartAdminSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
1024-labSmartAdmin	Affected 3.0 – 3.29 30 affected builds	Fixed in–
lab1024SmartAdmin	Affected 3.0 – 3.29 30 affected builds	Fixed in–

AI-suggested

Until an official patch is released, organizations should implement strict input validation and sanitization on any user-controllable data passed to the FreeMarker template engine, particularly the template_content argument. Employ allowlists to restrict permissible template directives and expressions. Consider disabling or restricting template features that allow dynamic code execution if feasible. Monitor network traffic and logs for unusual template-related activity or errors indicative of exploitation attempts. Limit access to the MailService component and related interfaces to trusted users and networks, applying network segmentation and firewall rules. If possible, upgrade to a newer, unaffected version once available. Additionally, conduct code reviews and penetration testing focused on template injection vectors to identify and remediate similar issues. Maintain up-to-date backups and incident response plans to mitigate potential impacts of exploitation.

Description

A flaw has been found in 1024-lab/lab1024 SmartAdmin up to 3.29. Affected by this issue is 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. Executing a manipulation of the argument template_content can lead to improper neutralization of special elements used in a template engine. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

This vulnerability can allow attackers to inject malicious template code remotely, potentially leading to unauthorized data disclosure, data manipulation, or denial of service within affected SmartAdmin deployments. The improper neutralization of template elements can be exploited to execute arbitrary template logic, which may expose sensitive information such as user data or system configuration. Integrity of email templates or other rendered content could be compromised, leading to misinformation or phishing risks. Availability may be impacted if the injected code causes application crashes or resource exhaustion. Organizations relying on SmartAdmin for administrative or operational functions may face disruption, reputational damage, and compliance issues if exploited. The medium severity score reflects moderate but tangible risks, especially given the ease of remote exploitation without user interaction. The absence of vendor patches increases the window of exposure, making timely mitigation critical.

Summary

The vulnerability CVE-2026-3725 affects the 1024-lab SmartAdmin product, specifically versions 3.0 through 3.29. The root cause lies in the improper neutralization of special elements within the FreeMarker template engine, used in the freemarkerResolverContent function of the MailService.java file. This function processes the template_content argument, which, if manipulated by an attacker, can lead to injection of malicious template directives or expressions. Such injection can cause the template engine to execute unintended code or disclose sensitive information. The attack vector is remote network access, requiring only low privileges and no user interaction, making it relatively easy to exploit in vulnerable environments. The vulnerability has a CVSS 4.0 base score of 5.3, reflecting medium severity, with partial impact on confidentiality, integrity, and availability. The lack of vendor response and patch availability necessitates immediate attention from users of SmartAdmin to implement mitigations or upgrade once a fix is released.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 16 Mar 2026, 09:15 UTC

Technical details

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