PT-2026-51246 · Libexpat+1 · Libexpat+1

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CVE-2026-56410

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Published

2026-06-21

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Updated

2026-08-31

CVSS v3.1

6.9

Medium

VectorAV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Name of the Vulnerable Software and Affected Versions libexpat versions prior to 2.8.2
Description The xmlwf component contains an integer overflow in the resolveSystemId() function. An integer overflow occurs when an arithmetic operation results in a value that exceeds the maximum size of the integer type used to store it.
Recommendations Update to version 2.8.2 or later.

Exploit

Fix

DoS

Integer Overflow

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Weakness Enumeration

Related Identifiers

AZL-90252
CVE-2026-56410
ECHO-CBD2-A00B-644F
OESA-2026-2973
OESA-2026-2974
OESA-2026-2975
OESA-2026-2976
OPENSUSE-SU-2026:11584-1

Affected Products

Ibm Aix
Libexpat