What’s Vulnerable › Vulnerabilities

CVE-2022-31246

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-17 · updated 2026-06-17
• Weakness: CWE-88

Description

paymentrequest.py in Electrum before 4.2.2 allows a file:// URL in the r parameter of a payment request (e.g., within QR code data). On Windows, this can lead to capture of credentials over SMB. On Linux and UNIX, it can lead to a denial of service by specifying the /dev/zero filename.

Affected products

• Electrum: before 4.2.2 — fixed in 4.2.2

How to fix

Upgrade to a fixed version: Electrum 4.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/spesmilo/electrum/security/advisories/GHSA-4fh4-hx35-r355
• https://twitter.com/ElectrumWallet/status/1534540879905665028
• https://github.com/spesmilo/electrum/security/advisories/GHSA-4fh4-hx35-r355
• https://twitter.com/ElectrumWallet/status/1534540879905665028

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