CVE-2026-56132

Medium

In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is…

mitre·CWE-821·Published 2026-06-19

CVSS

6.9

EPSS

—

KEV

Exploits

cve.orgen

200 chars

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.

CVSS metrics across sources

Version	Type	Source	Base	Exp

3.1	Primary	cve.org	6.9	—	—	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
3.1	Secondary	ENISA EUVD	6.9	—	—	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L