PatchTheCVECVE-2026-66146: Multiple Cross-Site Scripting (XSS) vulnerabilities were identified in GMS 9.5.1 (Build 9510.1044) and earlier
CVE-2026-66146 is a medium-severity flaw (CVSS 6.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Multiple Cross-Site Scripting (XSS) vulnerabilities were identified in GMS 9.5.1 (Build 9510.1044) and earlier versions that allow a remote attacker to execute javascript script in a user's browser.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 78%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-08-11 |
| Last modified | 2026-10-23 |
Timeline
- Published CVE record published
- Updated Record last modified
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-2026-66146?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-66146 being exploited?
CVE-2026-66146 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-2026-66146 affect?
CVE-2026-66146 affects affected software. Severity is medium (CVSS 6.1). Multiple Cross-Site Scripting (XSS) vulnerabilities were identified in GMS 9.5.1 (Build 9510.1044) and earlier versions that allow a remote attacker to execute javascript script in a user's browser.
How urgent is CVE-2026-66146?
Priority 27/100. No elevated risk signals yet.