SmartAdmin: Incomplete Filtering of Special Elements
CVE-2026-3725 is a high-severity incomplete filtering of special elements vulnerability in SmartAdmin from 1024-lab, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected SmartAdmin versions: 3.0; 3.1; 3.2, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.45% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of SmartAdmin you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| 1024-lab | SmartAdmin | 3.0; 3.1; 3.2; 3.3; 3.4; 3.5; 3.6; 3.7; and 22 more ranges | Not stated |
| Lab1024 | SmartAdmin | 3.0; 3.1; 3.2; 3.3; 3.4; 3.5; 3.6; 3.7; and 22 more ranges | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 2.1 | Low | CNA (vuldb.com) |
| CVSS 3.1 | 6.3 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 8.8 | High | NVD |
| CVSS 2.0 | 6.5 | Medium | CNA (vuldb.com) |
Official 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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Incomplete Filtering of Special Elements
The product receives data from an upstream component, but it does not completely filter special elements before sending it to a downstream component.
More Incomplete Filtering of Special Elements vulnerabilities (CWE-791)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.349703Third Party Advisory, VDB Entry
- vuldb.com/?submit.766459Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- notion.so/SmartAdmin-Server-Side-Template-Injection-SSTI-in-Email-Template-Rendering-310ea92a3c418087ac63ec8e…Exploit, Third Party Advisory
Other references
- vuldb.com/?ctiid.349703Permissions Required, VDB Entry
Recent Incomplete Filtering of Special Elements vulnerabilities
- 7.2 High severity
- 7.2 High severity
- 7.3 High severity
- 9.8 Critical severity
- 8.5 High severity
- 8.8 High severity
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