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Fencer Vulns
critical 9.8

CVE-2026-78183 json

DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float

published 2026-08-23 2 mo ago modified 2026-10-14 25 d ago also EUVD-2026-64665

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

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.

Patch / fix

  • perl-DBD-Pg openSUSE Tumbleweed 3.21.2-1.1

opensuse advisories openSUSE-SU-2026:11722-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-78183 updated cvss 7.5

perl-DBD-Pg: DBD::Pg: Heap out-of-bounds write can lead to memory corruption.

  • Red Hat Enterprise Linux 6 perl-DBD-Pg Red Hat Enterprise Linux 7 perl-DBD-Pg, perl-DBD-Pg-tests Red Hat Enterprise Linux 8 perl-DBD-Pg Red Hat Enterprise Linux 9 perl-DBD-Pg Red Hat Enterprise Linux 10 perl-DBD-Pg
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

References

Sources

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