CVE-2026-86139

Description

In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.

References

• https://github.com/GNOME/libxml2/commit/8edbbdb09f24d26a2f900141fddc2b9d014f53b0
• https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4