CVE-2026-56403

MEDIUM

Libexpat < 2.8.2 - Integer Overflow or Wraparound

Title source: rule
STIX 2.1

Description

libexpat before 2.8.2 has an integer overflow in storeAtts.

References (1)

Core 1

Scores

CVSS v3 6.9
EPSS 0.0013
EPSS Percentile 2.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-190
Status published
Products (2)
libexpat project/libexpat < 2.8.2
libexpat_project/libexpat < 2.8.2
Published Jun 21, 2026
Tracked Since Jun 21, 2026