PatchTheCVECVE-2026-66570: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss
CVE-2026-66570 is a high-severity flaw (CVSS 7.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss WordPress File Upload wp-file-upload allows Stored XSS.This issue affects WordPress File Upload: from n/a through 5.2.1.
Why this priority
- High severity
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | n/a |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-11-01 |
| Last modified | 2026-11-01 |
Last updated 2026-11-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Advisories and coverage
Research and news
- Vulners Bulletins: CVE-2026-66570 WordPress WordPress File Upload plugin <= 5.2.1 - Cross Site Scripting (XSS) vulnerability 2026-11-01
- Vulners Bulletins: CVE-2026-66570 WordPress WordPress File Upload plugin <= 5.2.1 - Cross Site Scripting (XSS) vulnerability 2026-11-01
- VulDB Recent Entries: CVE-2026-66570 | Nickboss File Upload Plugin up to 5.2.1 on WordPress cross site scripting 2026-11-01
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-66570?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-66570 being exploited?
CVE-2026-66570 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-66570 affect?
CVE-2026-66570 affects affected software. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss WordPress File Upload wp-file-upload allows Stored XSS.This issue affects WordPress File Upload: from n/a through 5.2.1.
How urgent is CVE-2026-66570?
Priority 25/100. High severity