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Common Weakness Enumeration

CWE-1322

Use of Blocking Code in Single-threaded, Non-blocking Context

Category: BaseCVE: 1
Description

The product uses a non-blocking model that relies on a single threaded process for features such as scalability, but it contains code that can block when it is invoked.

CVE vulnerabilities with CWE-1322 (1)
6.0
CVSS
MEDIUM
CVE-2026-42256

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

pub. 2026-05-09
Information
ID: CWE-1322
Type: Base
Vulnerabilities: 1
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