CVE-2025-11905Public exploitNetwork attack vector

Authenticated command execution via unvalidated parseData

Published Oct 17, 2025 · Updated Oct 17, 2025

Code injection in ChanCMS 3.3.0 through 3.3.2 allows remote authenticated users to execute operating-system commands via parseData. The getArticle handler in app\modules\cms\controller\gather.js evaluates unvalidated parseData content, exposing Node.js process and child_process APIs. A valid backend session is required; successful exploitation runs commands with the ChanCMS server process's privileges.

CVSS severity8.8
High
EPSS probability0.76%
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 ChanCMS 3.3.0 through 3.3.2 allows remote authenticated users to execute operating-system commands via parseData. The getArticle handler in app\modules\cms\controller\gather.js evaluates unvalidated parseData content, exposing Node.js process and child_process APIs. A valid backend session is required; successful exploitation runs commands with the ChanCMS server process's privileges.

The record

CVE
CVE-2025-11905
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
ChanCMS
Product
ChanCMS
Classifications
CWE-74, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.3.0
  2. Affected versionversion=3.3.1
  3. Affected versionversion=3.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ChanCMS · ChanCMSversion=3.3.0; version=3.3.1; version=3.3.2

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

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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