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The vulnerability CVE-2025-14674 is an expression injection flaw within the `QLExpressEngine.doEval` function of the aizuda snail-job task scheduling framework. This function is responsible for evaluating dynamic expressions using the QLExpress engine. The core issue is that the function does not properly neutralize or sanitize externally-influenced input before processing it. An attacker can remotely submit a specially crafted malicious expression as input. When this input is passed to the vulnerable `doEval` function, the embedded malicious code is executed within the context of the application’s engine. This allows the attacker to break out of the intended expression structure. Successful exploitation can lead to unauthorized manipulation of the application’s logic or data. The vulnerability is remotely exploitable over the network without requiring user interaction. It affects all versions of the snail-job-common-core component up to and including version 1.6.0. The flaw was addressed by a patch in commit 978f316c38b3d68bb74d2489b5e5f721f6675e86. This fix is included in the released version 1.7.0-beta1, which fully remediates the security issue.
dailycve form:
Platform: aizuda snail-job
Version: <= 1.6.0
Vulnerability: Expression Injection
Severity: Medium
date: 2025-12-14
Prediction: 2025-12-21
What Undercode Say:
Check Maven dependency version mvn dependency:tree | grep snail-job Manual verification in pom.xml grep -A2 -B2 "snail-job" pom.xml Example malicious payload structure (theoretical) attackerControlledInput = "validExpression(); maliciousFunction()"
// Code location of the vulnerability
// snail-job-common-core/src/main/java/com/aizuda/snailjob/common/core/expression/strategy/QLExpressEngine.java
public Object doEval(String expression, Map<String, Object> context) {
// Vulnerable: expression passed directly without sanitization
return expressRunner.execute(expression, context, null, false, false);
}
How Exploit:
Remote attacker crafts malicious expression payload. Payload sent to vulnerable `doEval` endpoint. Engine evaluates injected code within application context. Attacker achieves unauthorized logic or data manipulation.
Protection from this CVE:
Upgrade to version 1.7.0-beta1. Apply patch commit 978f316c38b3d68bb74d2489b5e5f721f6675e86. Restrict network access to service. Implement strict input validation.
Impact:
Unauthorized code execution potential. Data corruption or manipulation. Service disruption availability impact. Confidentiality and integrity loss.
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Sources:
Reported By: github.com
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