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CVE-2026-56407

nvd nist
Published: Jun 21, 2026Modified: Jun 23, 2026

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6.9
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Exploitability: 1.4 / Impact: 5.5
Source: MITRE (Secondary)

Description

libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.

Affected (1)

Libexpat Project
1 product
Libexpat
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Libexpat
Before 2.8.2

Related CWEs

CWE-190
Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (1)

Source: cve@mitre.org
PatchIssue Tracking

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