CVE-2026-30878— baserCMS: Mail Form Acceptance Bypass via Public API
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I. Basic Information for CVE-2026-30878
Vulnerability Information
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Vulnerability Title
baserCMS: Mail Form Acceptance Bypass via Public API
Source: NVD (National Vulnerability Database)
Vulnerability Description
baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unauthenticated users to submit mail form entries even when the corresponding form is not accepting submissions. This bypasses administrative controls intended to stop form intake and enables spam or abuse via the API. This issue has been patched in version 5.2.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
baserCMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
baserCMS是baserCMS团队的一套企业级内容管理系统（CMS）。 baserCMS 5.2.3之前版本存在安全漏洞，该漏洞源于公共邮件提交API存在缺陷，可能导致绕过管理控制并滥用表单。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| baserproject | basercms | < 5.2.3 | - |
II. Public POCs for CVE-2026-30878
| # | POC Description | Source Link | Shenlong Link |
|---|
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- 2026/03/26 baserCMSにXSSをはじめとする複数の脆弱性x_refsource_MISC
- Release baserCMS 5.2.3 リリース · baserproject/basercms · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-30878
Same Patch Batch · baserproject · 2026-03-31 · 9 CVEs total
| CVE-2026-21861 | 9.1 CRITICAL | baserCMS: OS Command Injection Leading to Remote Code Execution (RCE) |
| CVE-2026-30877 | 9.1 CRITICAL | baserCMS: OS Command Injection in the baserCMS Update Functionality |
| CVE-2025-32957 | 8.7 HIGH | baserCMS: unsafe File Upload Leading to Remote Code Execution (RCE) |
| CVE-2026-30940 | 7.2 HIGH | baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE |
| CVE-2026-32734 | 7.1 HIGH | baserCMS: Multiple vulnerabilities in baserCMS |
| CVE-2026-27697 | baserCMS: SQL injection vulnerability in blog post | |
| CVE-2026-30880 | baserCMS: OS command injection vulnerability in installer | |
| CVE-2026-30879 | baserCMS: Cross-site scripting vulnerability in blog post |
IV. Related Vulnerabilities
Same product: basercms
- CVE-2026-32734
baserCMS: Multiple vulnerabilities in baserCMS - CVE-2026-30879
baserCMS: Cross-site scripting vulnerability in blog post - CVE-2026-30940
baserCMS: Path Traversal in Theme File API Leads to Arbitrar - CVE-2026-30877
baserCMS: OS Command Injection in the baserCMS Update Functi - CVE-2026-30880
baserCMS: OS command injection vulnerability in installer
Same vendor: baserproject
- CVE-2026-32734
baserCMS: Multiple vulnerabilities in baserCMS - CVE-2026-30879
baserCMS: Cross-site scripting vulnerability in blog post - CVE-2026-30940
baserCMS: Path Traversal in Theme File API Leads to Arbitrar - CVE-2026-30877
baserCMS: OS Command Injection in the baserCMS Update Functi - CVE-2026-30880
baserCMS: OS command injection vulnerability in installer
Same weakness: CWE-285
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V. Comments for CVE-2026-30878
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