CVE-2026-42504: Quadratic complexity in WordDecoder.DecodeHeader in mime

Overview

Severity
High (CVSS 7.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Status
Not Exploited
Patch Tuesday
2026-Jun
Released
2026-06-05
Last Updated
2026-09-03
EPSS Score
0.56% (percentile: 44.5%)

Affected Products (4)

Other

  • 21483-17084
  • 21411-17084
  • 21423-17084
  • 21489-17084

Revision History

  • 2026-06-05: Information published.
  • 2026-06-07: Information published.
  • 2026-06-07: Information published.
  • 2026-06-09: Information published.
  • 2026-06-28: Information published.
  • 2026-07-02: Information published.
  • 2026-09-03: Information published.