CVE-2025-58852Network attack vector

Stored XSS via missing request nonce validation

Published Sep 5, 2025 · Updated May 13, 2026

Cross-site request forgery in MSTW League Manager 2.10 and earlier allows remote attackers to store script through a crafted request. Public materials identify missing or incorrect nonce validation in an unspecified state-changing function but do not name the handler or parameter. Exploitation requires an authenticated administrator to open an attacker-controlled link or page, after which the injected script persists for later execution.

CVSS severity7.1
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site request forgery in MSTW League Manager 2.10 and earlier allows remote attackers to store script through a crafted request. Public materials identify missing or incorrect nonce validation in an unspecified state-changing function but do not name the handler or parameter. Exploitation requires an authenticated administrator to open an attacker-controlled link or page, after which the injected script persists for later execution.

The record

CVE
CVE-2025-58852
Published
Sep 5, 2025
Updated
May 13, 2026
Vendor
Mark O'Donnell
Product
MSTW League Manager
Classifications
CWE-352, CAPEC-592, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mark O'Donnell · MSTW League Managerversion=0 <=2.10

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CAPEC-592Stored XSS
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo