CVE-2026-78183: Schwachstellen-Eintrag (NVD)
DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.
quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.
This can be reached by the $dbh->quote method, for example
$dbh->quote( "Infinity", DBI::SQL_NUMERIC ).
This regression was introduced in 3.21.0 by the quote.c rewrite.
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CVE-2026-78183 | Bucardo DBD::Pg 3.21.0 quote.c quote_float heap-based overflow (Nessus ID 343084)
A vulnerability identified as critical has been detected in Bucardo DBD::Pg 3.21.0. Affected by this issue is the function quote_float of the file quote.c. The manipulation leads to heap-based buffer overflow. This vulnerability is document