baserCMS: Cross-site scripting vulnerability in blog post
Priority LOW 36CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00242 15th percentileScored 2026-11-07
Fix Fixed basercms (baserproject): 5.2.3baserproject/basercms (Packagist): 5.2.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| baserproject | basercms | before 5.2.3 | 5.2.3 | Patch available | CNA |
| — | baserproject/basercms (Packagist) | before 5.2.3 | 5.2.3 | Patch available | GHSA-jmq3-x8q7-j9qm |
- basercms Vendorbaserproject Affected before 5.2.3 Fixed in 5.2.3 Patch available CNA
- baserproject/basercms (Packagist) Vendor— Affected before 5.2.3 Fixed in 5.2.3 Patch available GHSA-jmq3-x8q7-j9qm
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:* | before 5.2.3 | Vulnerable | baserproject |
- cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:* Versions before 5.2.3 Vulnerable ·baserproject
Remediation
- Fix · CNA basercms (baserproject) Fixed in 5.2.3
- Fix · GHSA-jmq3-x8q7-j9qm baserproject/basercms (Packagist) Fixed in 5.2.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-30879
- 2026-10-03 Alias added: GHSA-jmq3-x8q7-j9qm
References
More baserproject Basercms vulnerabilities
- TI-2026-17563 baserCMS: OS Command Injection Leading to Remote Code Execution (RCE) CVSS 3.1CRITICAL 9.1
- TI-2025-23967 baserCMS: unsafe File Upload Leading to Remote Code Execution (RCE) CVSS 3.1HIGH 8.7
- TI-2026-23707 baserCMS: Mail Form Acceptance Bypass via Public API CVSS 3.1MEDIUM 5.3
- TI-2023-10935 baserCMS File Uploader Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 9.8
- TI-2023-10936 baserCMS allows any file to be uploaded CVSS 3.1CRITICAL 9.8
- TI-2023-23483 baserCMS Code Injection Vulnerability in Mail Form Feature CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-30879 · CVE Program
- CVE-2026-30879 · NVD
- FIRST EPSS
- GHSA-jmq3-x8q7-j9qm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences