The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the StandardsExtractingContentHandler were insufficient, and we found a separate, new regex DoS in a different regex in the StandardsExtractingContentHandler. These are now fixed in 1.28.4 and 2.4.1.
https://security.netapp.com/advisory/ntap-20220812-0004/
https://lists.apache.org/thread/wfno8mf5nlcvbs78z93q9thgrm30wwfh