CVE-2026-72522

MEDIUM

CVE: CVE-2026-72522 - libexpat before 2Sign in to save

CVSS

6.2

CVSS v3.1

EPSS

0.2%

Exploit Prediction Score

Published

August 10, 2026

Exploitability

EPSS probability 0.2%

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.

Weaknesses

CWE-125

Affected Packages

No package data available.

Aliases

CVE-2026-72522

Related references

Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

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