libexpat is a fast streaming XML parser. Alongside libxml2, Expat is one of the most widely used software libre XML parsers written in C, precisely C99. It is cross-platform and licensed under the MIT license.
Expat 2.4.6 has been released a few hours ago. This release fixes a regression introduced by one of the security fixes in 2.4.5.
For more details, please check out the change log.
If you maintain Expat packaging or a bundled copy of Expat or a pinned version of Expat somewhere, please update to 2.4.6. Thank you!