CVE-2026-56132
In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.
- Published Jun 19, 2026
- CVSS 6.9 medium
- 0.1% chance of exploitation in the next 30 days (EPSS)
- A fix is available