CVE-2026-78183 - DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float
Brief
CVE ID : CVE-2026-78183
Published : Aug. 23, 2026, 8:16 p. m.
- 54 minutes ago
Description : DBD::Pg version 3.
- 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.
- 0 by the quote. c rewrite.