CVE-2025-11304Public exploitNetwork attack vector

Authenticated API data exposure via arbitrary-origin CORS

Published Oct 5, 2025 · Updated Oct 5, 2025

CORS misconfiguration in the Mentor LMS API 1.1.0 through 1.1.1 allows remote attackers to read authenticated API data via a malicious site. The server accepts arbitrary Origin values and permits credentialed cross-origin requests across its routes, causing a victim's browser to send session cookies and expose responses. Exploitation requires an authenticated user to visit an attacker-controlled page; exposed responses include sensitive administrative settings.

CVSS severity6.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CORS misconfiguration in the Mentor LMS API 1.1.0 through 1.1.1 allows remote attackers to read authenticated API data via a malicious site. The server accepts arbitrary Origin values and permits credentialed cross-origin requests across its routes, causing a victim's browser to send session cookies and expose responses. Exploitation requires an authenticated user to visit an attacker-controlled page; exposed responses include sensitive administrative settings.

The record

CVE
CVE-2025-11304
Published
Oct 5, 2025
Updated
Oct 5, 2025
Vendor
UI Lib
Product
Mentor LMS
Classifications
CWE-942, CWE-346, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.1.0
  2. Affected versionversion=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UI Lib · Mentor LMSversion=1.1.0; version=1.1.1

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-942Permissive Cross-domain Security Policy with Untrusted Domains
CWE-346Origin Validation Error
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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