CVE-2026-56408

libexpat before 2.8.2 has an integer overflow in copyString.

  • Published Jun 21, 2026
  • CVSS 6.9 medium
  • 0.1% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

In the news

CVE-2026-56408 at the National Vulnerability Database