DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an extreme number of placeholders. The fix for CVE-2026-10879 did not allocate enough memory to handle approximately 1.2-million placeholders. DBI version 1.650 sets a hard limit of 99,999 placeholders.
https://www.cve.org/CVERecord?id=CVE-2026-10879
https://metacpan.org/release/HMBRAND/DBI-1.650/changes
https://github.com/perl5-dbi/dbi/commit/2b77c88b655e9539a592c71a61fb965fc0075395.patch