CVE-2025-65951Inside Track / Entropy Derby Timelock Encryption Bypassed via Pre-Computed VDF Output Leakage
Updated under an hour ago ()
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Inside Track / Entropy Derby is a research-grade horse-racing betting engine. Prior to commit 2d38d2f, the VDF-based timelock encryption system fails to enforce sequential delay against the betting operator. Bettors pre-compute the entire Wesolowski VDF and include vdfOutputHex in their encrypted bet ticket, allowing the house to decrypt immediately using fast proof verification instead of expensive VDF evaluation. This issue has been patched via commit 2d38d2f.
- CVSS
- 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-200, CWE-327
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Nov 25, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mescuwa entropy-derby mescuwa:entropy_derby (from the name) | before 2d38d2f16bbb3b4240698148f80d8c5202725c77 | CNA record |
References
- https://github.com/mescuwa/entropy-derby/security/advisories/GHSA-pm54-f847-w4mhx-refsource-confirm
- https://github.com/mescuwa/entropy-derby/commit/2d38d2f16bbb3b4240698148f80d8c5202725c77x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.