CVE-2022-25894: Uflo core Uflo-core Vulnerability

CRITICAL
Advisory Identifier: GHSA-8m9f-c5p9-wqch
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CVSS 9.8
CWE-94
Published
Advisory Summary

CVE-2022-25894 is a CRITICAL (CVSS 9.8) uflo-core vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Uflo core libraries in the Maven ecosystem. The issue involves uflo-core. Remediation is available in the latest vendor maintenance releases.

CVE-2022-25894 at a Glance

CVE Identifier CVE-2022-25894
GHSA Identifier GHSA-8m9f-c5p9-wqch
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Uflo core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-25894

To remediate this vulnerability, upgrade all affected Uflo core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.bstek.uflo:uflo-core fixed: Latest secure release 
<dependency>
    <groupId>com.bstek.uflo</groupId>
    <artifactId>uflo-core</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.bstek.uflo

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-25894, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.bstek.uflo

Analyze the terminal output to locate any version of Uflo core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.bstek.uflo command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Uflo core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

All versions of the package com.bstek.uflo:uflo-core are vulnerable to Remote Code Execution (RCE) in the ExpressionContextImpl class via jexl.createExpression(expression).evaluate(context); functionality, due to improper user input validation.

CVE-2022-25894 Affected Uflo core Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.bstek.uflo:uflo-core
maven/com.bstek.uflo/uflo-core
Maven
≤ 2.1.5

References

NVD — CVE-2022-25894 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-25894
fmyyy1.github.io/2022/10/23/uflo2rce WEB
https://fmyyy1.github.io/2022/10/23/uflo2rce
Uflo core Source Repository REPOSITORY
https://github.com/youseries/uflo/blob/b3e198bc6523e5a6ba69edd84ba10e05a3b78726/uflo-core/src/main/java/com/bstek/uflo/expr/impl/ExpressionContextImpl.java#L126
Uflo core Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JAVA-COMBSTEKUFLO-3091112

Frequently Asked Questions

What is CVE-2022-25894?
CVE-2022-25894 is a security vulnerability in Uflo core involving uflo-core under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Uflo core versions are affected?
Affected versions include releases prior to current release patches across affected packages: com.bstek.uflo:uflo-core.
What version fixes CVE-2022-25894?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is uflo-core affected?
Yes, com.bstek.uflo:uflo-core is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2022-25894?
CVE-2022-25894 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-25894?
CVE-2022-25894 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Maven dependencies for CVE-2022-25894?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.bstek.uflo'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8m9f-c5p9-wqch",
  "modified" : "2025-04-01T22:57:10Z",
  "published" : "2023-01-26T21:30:25Z",
  "aliases" : [ "CVE-2022-25894" ],
  "summary" : "Remote Code Execution in com.bstek.uflo:uflo-core",
  "details" : "All versions of the package com.bstek.uflo:uflo-core are vulnerable to Remote Code Execution (RCE) in the ExpressionContextImpl class via jexl.createExpression(expression).evaluate(context); functionality, due to improper user input validation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.bstek.uflo:uflo-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-25894"
  }, {
    "type" : "WEB",
    "url" : "https://fmyyy1.github.io/2022/10/23/uflo2rce"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/youseries/uflo/blob/b3e198bc6523e5a6ba69edd84ba10e05a3b78726/uflo-core/src/main/java/com/bstek/uflo/expr/impl/ExpressionContextImpl.java#L126"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JAVA-COMBSTEKUFLO-3091112"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-27T01:01:03Z",
    "nvd_published_at" : "2023-01-26T21:15:00Z"
  }
}