CVE-2022-50237

MEDIUM

ed25519-dalek < 2.0.0 - Private Key Exposure via Double Public Key Signing Oracle

Title source: llm

Description

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.

References (3)

Core 3

Core References

Various Sources

https://rustsec.org/advisories/RUSTSEC-2022-0093.html

Various Sources

https://crates.io/crates/ed25519-dalek

Various Sources

https://github.com/MystenLabs/ed25519-unsafe-libs

View Writeup ZIP pw:eip

Scores

CVSS v3 5.9

EPSS 0.0018

EPSS Percentile 7.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-497

Status published

Products (2)

crates.io/ed25519-dalek 0 - 2.0.0crates.io

dalek-cryptography/ed25519-dalek < 2

Published Jul 28, 2025

Tracked Since Feb 18, 2026