WordPress MSTW League Manager plugin <= 2.10 - Cross Site Scripting (XSS) vulnerability
Summary
| CVE | CVE-2026-34890 |
|---|---|
| State | PUBLISHED |
| Assigner | Patchstack |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-02 13:16:26 UTC |
| Updated | 2026-04-02 13:16:26 UTC |
| Description | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Mark O’Donnell MSTW League Manager allows DOM-Based XSS.This issue affects MSTW League Manager: from n/a through 2.10. |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
| 3.1 | CNA | CVSS | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Mark ODonnell | MSTW League Manager | affected n/a 2.10 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| patchstack.com/database/wordpress/plugin/mstw-league-manager/vulnerability/w... | [email protected] | patchstack.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Conor Sullivan | Patchstack Bug Bounty Program (en)
There are currently no legacy QID mappings associated with this CVE.