Integer Underflow (Wrap or Wraparound) Affecting serde_with package, versions <3.21.0
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- published19 Jul 2026
- disclosed15 Jul 2026
- creditUnknown
Introduced: 15 Jul 2026
New CVE NOT AVAILABLE CWE-191 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade serde_with to version 3.21.0 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) in the KeyValueMap serialization process. An attacker can cause the application to terminate unexpectedly by providing empty sequences or map entries during serialization.