CVE-2026-30880: Baserproject/basercms BaserCMS Has OS Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-6hpg-8rx3-cwgv
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CWE-78
Published
Advisory Summary

CVE-2026-30880 is a CRITICAL basercms has os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Baserproject/basercms libraries in the Packagist ecosystem. The issue involves basercms has os command injection vulnerability in installer. Remediation is available by upgrading affected packages to version 5.2.3.

CVE-2026-30880 at a Glance

CVE Identifier CVE-2026-30880
GHSA Identifier GHSA-6hpg-8rx3-cwgv
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Baserproject/basercms
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2026-30880

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

baserproject/basercms fixed: 5.2.3 
Upgrade baserproject/basercms to 5.2.3
Verify Direct and Transitive Dependencies

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

inspect dependencies for baserproject/basercms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-30880, inspect your project dependencies for Baserproject/basercms:

inspect dependencies for baserproject/basercms

Analyze the terminal output to locate any version of Baserproject/basercms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.2.3), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Baserproject/basercms, 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

baserCMS has an OS command injection vulnerability in the installer. ### Target baserCMS 5.2.2 and earlier versions ### Vulnerability If baserCMS is placed on a server but not installed, malicious commands may be executed. ### Countermeasures Update to the latest version of baserCMS Please refer to the following page to reference for more information. https://basercms.net/security/JVN_54513170 ### Credits REN XINGDIAN

CVE-2026-30880 Affected Baserproject/basercms Versions

1 component(s)
Fixed Versions:
5.2.3
Product / Package Ecosystem Affected Versions Fixed Version
baserproject/basercms
 Packagist
< 5.2.3
5.2.3

References

Baserproject/basercms Security Information SECURITY
https://basercms.net/security/JVN_20837860
Baserproject/basercms Source Repository REPOSITORY
https://github.com/baserproject/basercms
Baserproject/basercms Release RELEASE
https://github.com/baserproject/basercms/releases/tag/5.2.3
GitHub Advisory / Wiki ADVISORY
https://github.com/baserproject/basercms/security/advisories/GHSA-6hpg-8rx3-cwgv
NVD — CVE-2026-30880 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30880

Frequently Asked Questions

What is CVE-2026-30880?
CVE-2026-30880 is a security vulnerability in Baserproject/basercms involving baserCMS has OS command injection vulnerability in installer under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Baserproject/basercms versions are affected?
Affected versions include releases prior to 5.2.3 across affected packages: baserproject/basercms.
What version fixes CVE-2026-30880?
Upgrading to 5.2.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is baserproject/basercms affected?
Yes, baserproject/basercms is affected in releases prior to 5.2.3. Upgrade your dependency to 5.2.3 or later.
What CWE is associated with CVE-2026-30880?
CVE-2026-30880 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check Packagist dependencies for CVE-2026-30880?
Run the dependency tree command: 'inspect dependencies for baserproject/basercms'. 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-6hpg-8rx3-cwgv",
  "modified" : "2026-03-31T22:43:31Z",
  "published" : "2026-03-31T22:43:31Z",
  "aliases" : [ "CVE-2026-30880" ],
  "summary" : "baserCMS has OS command injection vulnerability in installer",
  "details" : "baserCMS has an OS command injection vulnerability in the installer.\n\n### Target\nbaserCMS 5.2.2 and earlier versions\n\n### Vulnerability\n\nIf baserCMS is placed on a server but not installed, malicious commands may be executed.\n\n### Countermeasures\nUpdate to the latest version of baserCMS\n\nPlease refer to the following page to reference for more information.\nhttps://basercms.net/security/JVN_54513170\n\n### Credits\n\nREN XINGDIAN",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "baserproject/basercms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.2.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.2.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/baserproject/basercms/security/advisories/GHSA-6hpg-8rx3-cwgv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-30880"
  }, {
    "type" : "WEB",
    "url" : "https://basercms.net/security/JVN_20837860"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/baserproject/basercms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/baserproject/basercms/releases/tag/5.2.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-31T22:43:31Z",
    "nvd_published_at" : "2026-03-31T01:16:36Z"
  }
}