CVE-2025-8838 WinterChenS my-site Backend admin preHandle improper authentication
Improper authentication in the backend admin interface allows remote attackers to bypass login restrictions, though the maintainer disputes the exploit's validity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-8838?
CVE-2025-8838 is a medium-severity authentication bypass vulnerability in WinterChenS my-site, published on 11 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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."
Weakness: CWE-287
Which versions are affected by CVE-2025-8838?
It affects 1 product.
Products include Winterchens My-Site.
How do I fix CVE-2025-8838?
No fix has been published for CVE-2025-8838 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-8838 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8838 exists.
Other vulnerabilities in WinterChenS my-site
Sources
Also known as GHSA-5rgc-2f8v-p8gj.