An infinite loop vulnerability due to malformed XML in external entity was found in entityValueInitProcessor function affecting versions of Expat 2.2.0 and earlier. Upstream patch: https://github.com/libexpat/libexpat/commit/c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f External References: https://libexpat.github.io/doc/cve-2017-9233/