CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify file extensions and upload malicious PHP files. Attackers can append ',php' to Extensions_userfiles and upload a shell script to the media directory to execute arbitrary code on the server.
Conclusion & alert: CVE-2024-58280 is rated High Exploit Risk (73.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.54%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-20 | 0.38% | 0.54% | +0.16% |
| 2 | 2026-05-08 | 0.54% | 0.38% | -0.16% |
| 3 | 2026-04-11 | — | 0.54% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.6 | 4.0 | HIGH |
|
— | — | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| URL | Tags |
|---|---|
| https://www.cmsimple.org | Product |
| https://www.cmsimple.org/downloads_cmsimple50/CMSimple_5-15.zip | Product |
| https://www.exploit-db.com/exploits/52040 | Exploit |
| https://www.vulncheck.com/advisories/cmsimple-remote-command-execution-via-extensions-configuration | Third Party Advisory |