CVE-2026-72522

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.

References

https://github.com/libexpat/libexpat/pull/1296

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-54990

https://bugzilla.mozilla.org/show_bug.cgi?id=2053153

http://www.openwall.com/lists/oss-security/2026/08/11/5

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS