CVE-2026-72522

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CVSS 3.1

6.2 medium

EPSS

<1%p9

Published

Aug 10, 2026 (Aug 10, 2026)

Modified

Aug 31, 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.

Weakness: CWE-125
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.2%)

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