GHSA-4wvw-75qh-fqjp · Severity: low · Ecosystem: composer — Winter CMS Stored XSS through privileged upload of Media Manager file followed by renaming
Winter is a free, open-source content management system. Prior to 1.2.4, users with the `media.manage_media` permission can upload files to the Media Manager and rename them after uploading. Previously, media manager files were only sanitized on upload, not on renaming, which could have allowed a stored XSS attack. This issue has been patched in v1.2.4.
Conclusion & alert: CVE-2023-52083 is rated Low Risk (15.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.31%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-06-15 | 0.36% | 0.31% | -0.05% |
| 2 | 2025-11-21 | 0.46% | 0.36% | -0.10% |
| 3 | 2025-11-18 | — | 0.46% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.0 | 3.1 | LOW |
|
0.5 | 1.4 | [email protected] |
| 4.8 | 3.1 | MEDIUM |
|
1.7 | 2.7 | [email protected] |
GHSA-4wvw-75qh-fqjp · Severity: low · Ecosystem: composer — Winter CMS Stored XSS through privileged upload of Media Manager file followed by renaming