CVE-2025-55796 Weak cryptography in n/a
Predictable MD5 tokens allow attackers to brute-force confirmation links, leading to unauthorized account access and takeover.
- 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-2025-55796?
CVE-2025-55796 is a high-severity vulnerability in n/a, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The openml/openml.org web application version v2.0.20241110 uses predictable MD5-based tokens for critical user workflows such as signup confirmation, password resets, email confirmation resends, and email change confirmation. These tokens are generated by hashing the current timestamp formatted as "%d %H:%M:%S" without incorporating any user-specific data or cryptographic randomness. This predictability allows remote attackers to brute-force valid tokens within a small time window, enabling unauthorized account confirmation, password resets, and email change approvals, potentially leading to account takeover.
Weakness: CWE-400
Which versions are affected by CVE-2025-55796?
It affects 1 product.
Products include Openml Openml Frontend.
How do I fix CVE-2025-55796?
No fix has been published for CVE-2025-55796 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-55796 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55796 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-xfjh-gf9p-8qr6.