CVE-2023-30349Public exploitNetwork attack vector

Code execution via unsafe configuration deserialization

Published Apr 27, 2023 · Updated Jan 31, 2025

Code injection in JFinal CMS 5.1.0 and earlier allows remote attackers to execute arbitrary code through the /ueditor route. ActionEnter constructs ConfigManager, whose initEnv method passes attacker-controlled WEB-INF/classes/config.json content to Fastjson JSONObject.parseObject. Exploitation requires replacement of that configuration file, such as through a separate backend file-upload flaw, before a request reaches /ueditor.

CVSS severity9.8
Critical
EPSS probability1.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in JFinal CMS 5.1.0 and earlier allows remote attackers to execute arbitrary code through the /ueditor route. ActionEnter constructs ConfigManager, whose initEnv method passes attacker-controlled WEB-INF/classes/config.json content to Fastjson JSONObject.parseObject. Exploitation requires replacement of that configuration file, such as through a separate backend file-upload flaw, before a request reaches /ueditor.

The record

CVE
CVE-2023-30349
Published
Apr 27, 2023
Updated
Jan 31, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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