Which versions of My Site are affected by CVE-2025-8838?

Organizations using WinterChenS my-site should be aware of notable risk from CVE-2025-8838, a improper authentication vulnerability rated CVSS 6.9.

Is there a public PoC exploit available for CVE-2025-8838?

Yes, a public proof-of-concept exploit is available for CVE-2025-8838. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-8838?

Within 7 days: Identify affected systems running WinterChenS my-site and apply vendor patches promptly. Audit authentication configurations.

My Site CVE-2025-8838

Q: What is the CVSS score of CVE-2025-8838?

CVE-2025-8838 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

MEDIUM

Improper Authentication (CWE-287)

2025-08-11 cna@vuldb.com

Authentication Bypass My Site Winterchens

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

PoC Detected

Sep 11, 2025 - 17:05 vuln.today

Public exploit code

CVE Published

Aug 11, 2025 - 09:15 nvd

MEDIUM 6.9

DescriptionCVE.org

A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. This vulnerability affects the function preHandle of the file /admin/ of the component Backend Interface. The manipulation of the argument uri leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The code maintainer responded to the issue that "[he] tried it, and using this link automatically redirects to the login page."

AnalysisAI

A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. This vulnerability affects the function preHandle of the file /admin/ of the component Backend Interface. The manipulation of the argument uri leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The code maintainer responded to the issue that "[he] tried it, and using this link automatically redirects to the login page." Affected products include: Winterchens My-Site. Version information: up to 1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.