Vulnerability in Dalek-Cryptography Ed25519-Dalek

CVE-2022-50237

The ed25519-dalek crate before 2 for Rust allows a double public key signing function oracle attack. The Keypair implementation leads to a simple computation for extracting a private key.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2022-50237: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-50237?
CVE-2022-50237 is a medium-severity vulnerability in Dalek-Cryptography Ed25519-Dalek, classified under Exposure of Sensitive System Information to an Unauthorized Control Sphere. CVSS score: 5.9/10. Published 2025-07-28.
How severe is CVE-2022-50237?
Medium severity. CVSS v3 base score is 5.9 out of 10.