GHSA-8w3f-4r8f-pf53 · Severity: critical · Ecosystem: pip — pyLoad vulnerable to XSS through insecure CAPTCHA
pyload is an open-source Download Manager written in pure Python. An unsafe JavaScript evaluation vulnerability in pyLoad’s CAPTCHA processing code allows unauthenticated remote attackers to execute arbitrary code in the client browser and potentially the backend server. Exploitation requires no user interaction or authentication and can result in session hijacking, credential theft, and full system remote code execution. Commit 909e5c97885237530d1264cfceb5555870eb9546, the patch for the issue, is included in version 0.5.0b3.dev89.
Conclusion & alert: CVE-2025-53890 is rated High Risk (66.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.07%). Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
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 | 2026-05-10 | 0.57% | 1.07% | +0.49% |
| 2 | 2026-02-17 | 0.55% | 0.57% | +0.03% |
| 3 | 2026-02-07 | — | 0.55% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
GHSA-8w3f-4r8f-pf53 · Severity: critical · Ecosystem: pip — pyLoad vulnerable to XSS through insecure CAPTCHA
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||