CVE-2023-53933
HIGH EPSS 54.4%
Published Dec 17, 20256mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
Published Dec 17, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago
Description
Serendipity 2.4.0 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files with .phar extension. Attackers can upload files with system command payloads to the media upload endpoint and execute arbitrary commands on the server.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
54.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 1
CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| s9y | serendipity | 2.4.0 | any |
References 3
- docs.s9y.org https://docs.s9y.org/
- exploit-db.com https://www.exploit-db.com/exploits/51372
- vulncheck.com https://www.vulncheck.com/advisories/serendipity-authenticated-remote-code-execution-via-file-upload
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.