CVE-2026-72522

State: Published
Severity: 6.2 Medium
Published: Aug 10, 2026
Updated: Aug 13, 2026
Reserved: Aug 10, 2026

Description

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

Scores

CVSS	Score	Vector	Source
3.1	6.2 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	mitre

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
libexpatlibexpat project	before 2.8.3Affected

References

https://github.com/libexpat/libexpat/pull/1296
https://bugzilla.mozilla.org/show_bug.cgi?id=2053153
http://www.openwall.com/lists/oss-security/2026/08/11/5

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