Perch CMS 3.2 Remote Code Execution via Unrestricted File Upload
Priority HIGH 72CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
Perch CMS 3.2 contains a remote code execution vulnerability that allows authenticated administrators to upload arbitrary PHP files through the assets management interface. Attackers can upload a malicious .phar file with embedded system command execution capabilities to execute arbitrary commands on the server.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00924 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| Perch | Perch | 3.2 | — | No fix listed | CNA |
- Perch VendorPerch Affected 3.2 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:grabaperch:perch:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Grabaperch |
- cpe:2.3:a:grabaperch:perch:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Grabaperch
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-53889
- 2026-10-03 Alias added: GHSA-gvhr-6xq2-2p5f
References
Exploit 1
Other 1
More Grabaperch Perch vulnerabilities
- TI-2025-41039 A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2. CVSS 3.1MEDIUM 6.1
- TI-2023-30173 Perch CMS 3.2 Stored Cross-Site Scripting via SVG File Upload CVSS 4.0MEDIUM 5.1
- TI-2017-11679 Perch Content Management System 3.0.3 allows unrestricted file upload (with resultant… CVSS 3.1MEDIUM 4.8
Sources
- CVE-2023-53889 · CVE Program
- CVE-2023-53889 · NVD
- FIRST EPSS
- GHSA-gvhr-6xq2-2p5f · 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