CVE-2026-69100 Overview
CVE-2026-69100 is a remote code execution vulnerability in the LAMP Rapid Development Platform through version 5.6.2. The flaw resides in the GlueFactory component, which executes Groovy scripts pulled from database-backed message template fields without sandboxing, compilation restrictions, or whitelisting. Authenticated attackers who can write or influence the script field via message template endpoints can execute arbitrary Groovy code and issue operating system commands on the backend server. The issue is classified under CWE-94: Improper Control of Generation of Code and is fixed in commit 84b0c27.
Critical Impact
Authenticated attackers can achieve full remote code execution on the backend host, leading to complete confidentiality, integrity, and availability compromise of the LAMP Cloud application and its data.
Affected Products
- LAMP Rapid Development Platform (dromara/lamp-cloud) versions up to and including 5.6.2
- Deployments using the GlueFactory component to render message templates
- Instances prior to commit 84b0c27d3693e468c2c690d9fbc8ea9c22cd34e3
Discovery Timeline
- 2026-08-04 - CVE-2026-69100 published to NVD
- 2026-08-04 - Last updated in NVD database
Technical Details for CVE-2026-69100
Vulnerability Analysis
The LAMP Cloud platform uses GlueFactory to dynamically compile and execute Groovy scripts stored in database records associated with message templates. When a message template is processed, the platform retrieves the script field and passes its contents directly to the Groovy engine for evaluation. No sandboxing, security manager, or class whitelisting is applied. This means any Groovy language feature, including Runtime.getRuntime().exec(), ProcessBuilder, or arbitrary Java reflection, is available at runtime.
An attacker who can reach the message template endpoints with valid low-privilege credentials can insert malicious Groovy source into the template. Subsequent execution triggers command execution under the privileges of the LAMP Cloud service account.
Root Cause
The root cause is unsafe code generation ([CWE-94]) driven by trusting database template fields as safe input. GlueFactory treats stored scripts as internal configuration, but the message template API allows tenants or users to write to those fields. Without a SecureASTCustomizer, CompilerConfiguration restrictions, or an allow-list of imports and methods, the Groovy runtime evaluates the attacker-controlled script with full JVM capabilities.
Attack Vector
Exploitation requires network access to the LAMP Cloud application and authenticated access to the message template endpoints. The attacker submits a request that writes Groovy payload text into the template's script field, then triggers template rendering. GlueFactory compiles and executes the payload on the backend server, spawning arbitrary processes. Refer to the VulnCheck Security Advisory and GitHub Issue Tracker #408 for endpoint and payload specifics.
Detection Methods for CVE-2026-69100
Indicators of Compromise
- Unexpected child processes of the LAMP Cloud Java process, such as sh, bash, cmd.exe, powershell.exe, or curl/wget invocations.
- Message template database rows containing Groovy constructs such as Runtime.getRuntime(), ProcessBuilder, execute(), or java.lang.Reflect references.
- Outbound network connections from the application server to unfamiliar hosts shortly after message template edits.
- Anomalous writes to /tmp, /var/tmp, or the application working directory containing new binaries or scripts.
Detection Strategies
- Audit HTTP access logs for POST or PUT requests to message template endpoints that contain Groovy keywords in the request body.
- Correlate template modification events with subsequent process creation events on the host to identify template-driven execution chains.
- Deploy runtime application self-protection or Java agent instrumentation that flags GroovyShell, GroovyClassLoader, or GlueFactory compilations at runtime.
Monitoring Recommendations
- Enable verbose audit logging on message template create, update, and render actions with the acting user identity captured.
- Baseline expected child processes of the JVM and alert on deviations using endpoint telemetry.
- Monitor database change streams for writes to the message template script column and require review for values containing executable Groovy syntax.
How to Mitigate CVE-2026-69100
Immediate Actions Required
- Upgrade LAMP Cloud to a build that includes commit 84b0c27 or later. Review the GitHub Commit Update for the applied fix.
- Restrict access to message template endpoints to trusted administrative roles only, and revoke write privileges from general application users.
- Inspect existing message template records for suspicious Groovy content and quarantine any templates containing runtime, process, or reflection calls.
Patch Information
The upstream fix is committed as 84b0c27d3693e468c2c690d9fbc8ea9c22cd34e3 in the dromara/lamp-cloud repository. Operators should rebuild from the patched source or pull an updated container image that incorporates this commit. Verify the deployed artifact hash against the upstream reference before returning the service to production.
Workarounds
- Apply a network access control list that limits the message template API to internal administrative networks until the patch is deployed.
- Configure a Groovy SecureASTCustomizer and CompilerConfiguration allow-list if operating a custom fork, blocking System, Runtime, ProcessBuilder, and reflection APIs.
- Run the LAMP Cloud service under a least-privilege operating system account with no shell access and restricted file system write scope to limit post-exploitation impact.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
