CVE Catalog
CVE-2026-72522
MediumCVSS 6.2Exploitation Probability (EPSS)
Low risk0.18%
7th percentile - higher than 7% of all known CVEs
Summary
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.
Risk Assessment
Processing malicious XML data can cause application crashes or hangs, leading to denial of service.
Recommendation
Update libexpat to version 2.8.3 or later, which includes the fix.
Original NVD description (English source)
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.